appearance (n.) Look up appearance at Dictionary.com
late 14c., "visible state or form, figure; mere show," from Anglo-French apparaunce, Old French aparance "appearance, display, pomp" (13c.), from Latin apparentia, abstract noun from aparentem, past participle of apparere (see appear). Meaning "semblance" is recorded from early 15c.; that of "action of coming into view" is mid-15c. Phrase keep up appearances attested from 1760 (save appearances in same sense is 1711).
appeasable (adj.) Look up appeasable at Dictionary.com
1540s; see appease + -able. Related: Appeasably.
appease (v.) Look up appease at Dictionary.com
c. 1300 "to reconcile," from Anglo-French apeser, Old French apaisier "to pacify, make peace, appease, be reconciled, placate" (12c.), from the phrase a paisier "bring to peace," from a "to" (see ad-) + pais, from Latin pacem (nominative pax) "peace" (see peace). Related: Appeased; appeasing.
appeasement (n.) Look up appeasement at Dictionary.com
mid-15c., "pacification," from Middle French apeisement, Old French apaisement "appeasement, calming," noun of action from apaisier (see appease). First recorded 1919 in international political sense; not pejorative until failure of Chamberlain's policy toward Germany in 1939 (Methods of appeasement was Chamberlain's description of his policy).
appeaser (n.) Look up appeaser at Dictionary.com
mid-15c., agent noun from appease (v.). Political sense attested from 1940.
appellant (n.) Look up appellant at Dictionary.com
late 14c., Anglo-French, from Old French apelant, noun use of present participle of apeler, from Latin appellare (see appeal).
appellate (adj.) Look up appellate at Dictionary.com
"pertaining to appeals," 1726, from Latin appellatus, past participle of appellare (see appeal). Appellate jurisdiction is in Blackstone (1768).
appellation (n.) Look up appellation at Dictionary.com
late 15c., "action of appealing" (to a higher authority), from Old French apelacion (13c.), from Latin appellationem (nominative appellatio) "an addressing, accosting; an appeal; a name, title," noun of action from past participle stem of appellare (see appeal). Meaning "designation, name given to a person, thing, or class" is from mid-15c., from a sense also found in Middle French appeler.
appellative (adj.) Look up appellative at Dictionary.com
mid-15c., from Latin appellativus, from appellat-, past participle stem of appellare (see appeal (v.)). As a noun, attested from 1590s.
appellee (n.) Look up appellee at Dictionary.com
1530s, from Anglo-French (late 14c.), from Old French apelé (Modern French appelé) "accused, defendant," noun use of past participle of appeler "to call, address;" see appeal + -ee.
append (v.) Look up append at Dictionary.com
late 14c., "to belong to as a possession or right," from Old French apendre (13c.) belong, be dependent (on); attach (oneself) to; hang, hang up," and directly from Latin appendere "to cause to hang (from something), weigh," from ad- "to" (see ad-) + pendere "hang" (see pendant).

Meaning "to hang on, attach as a pendant" is 1640s; that of "attach as an appendix" is recorded by 1843. OED says the original word was obsolete by c. 1500, and these later transitive senses represent a reborrowing from Latin or French. Related: Appended; appending.
appendage (n.) Look up appendage at Dictionary.com
1640s, from append + -age.
appendectomy (n.) Look up appendectomy at Dictionary.com
1891, a hybrid from appendix + -ectomy.
appendices (n.) Look up appendices at Dictionary.com
proper Latin plural of appendix.
appendicitis (n.) Look up appendicitis at Dictionary.com
1886, from Latin stem of appendix, in the medical sense, + -itis "inflammation."
appendicular (adj.) Look up appendicular at Dictionary.com
1650s, from Latin appendicula, diminutive of appendix + -ar.
appendix (n.) Look up appendix at Dictionary.com
1540s, "subjoined addition to a document or book," from Latin appendix "an addition, continuation, something attached," from appendere (see append). Used for "small outgrowth of an internal organ" from 1610s, especially in reference to the vermiform appendix. This sense perhaps from or influenced by French appendix, where the term was in use from 1540s.
apperceive (v.) Look up apperceive at Dictionary.com
c. 1300, from Old French apercevoir (see apperception). In modern psychological use, a back-formation from apperception. Related: Apperceived; apperceiving.
apperception (n.) Look up apperception at Dictionary.com
1753, from French aperception (17c.), from German Apperzeption (or Latin apperceptionem), coined by German mathematician and philosopher Gottfried Wilhelm Leibniz (1646-1716) as noun corresponding to French apercevoir "perceive, notice, become aware of" (11c., from Latin ad "to" (see ad-) + percipere; see perceive) on analogy of Perzeption/percevoir.
appertain (v.) Look up appertain at Dictionary.com
late 14c., from Anglo-French apartenir, Old French apartenir (12c.) "be related to; be incumbent upon," from Late Latin appertinere "to pertain to," from ad- "to, completely" (see ad-) + pertinere "to belong to" (see pertain). To belong as parts to the whole, or as members to a family or class. Related: Appertained; appertaining.
appetence (n.) Look up appetence at Dictionary.com
"strong desire," c. 1600, from French appétence "desire," from Latin appetentia "longing after something," noun of state from appetentem (nominative appetens), present participle of appetere, from ad "to" (see ad-) + petere "to seek, request" (see petition (n.)).
appetite (n.) Look up appetite at Dictionary.com
c. 1300, "craving for food," from Anglo-French appetit, Old French apetit (13c.) "appetite, desire, eagerness," from Latin appetitus "appetite," literally "desire toward," from appetitus, past participle of appetere "to long for, desire; strive for, grasp at," from ad- "to" (see ad-) + petere "go to, seek out" (see petition (n.)).

Of other desires or cravings, from late 14c. As an adjective form, OED lists appetitious (1650s) and appetitual (1610s) as "obsolete," but appetitive (1570s) continues.
appetize (v.) Look up appetize at Dictionary.com
"make hungry," 1782 (implied in appetized), irregularly formed (on model of verbs in -ize) from appetite, or else a back-formation from appetizing.
appetizer (n.) Look up appetizer at Dictionary.com
"something taken to whet the appetite," 1820, agent noun from appetize.
appetizing (adj.) Look up appetizing at Dictionary.com
"exciting desire or hunger," 1650s, from appetite on model of present participle adjective forms in -ing.
Appian Way Look up Appian Way at Dictionary.com
road between Rome and Capua, so called because it was begun (302 B.C.E.) by the consul Appius Claudius Caecus.
applaud (v.) Look up applaud at Dictionary.com
late 15c. (implied in applauding), "to express agreement or approval; to praise," from Latin applaudere "to clap the hands in approbation, to approve by clapping hands; to strike upon, beat," from ad "to" (see ad-) + plaudere "to clap" (see plaudit). Sense of "express approval of" is from 1590s; that of "to clap the hands" is from 1590s. Figurative sense arrived in English before literal. Related: Applauded; applauding.
applause (n.) Look up applause at Dictionary.com
early 15c., from Latin applausus, past participle of applaudere "approve by clapping hands" (see applaud).
apple (n.) Look up apple at Dictionary.com
Old English æppel "apple; any kind of fruit; fruit in general," from Proto-Germanic *ap(a)laz (source also of Old Saxon, Old Frisian, Dutch appel, Old Norse eple, Old High German apful, German Apfel), from PIE *ab(e)l "apple" (source also of Gaulish avallo "fruit;" Old Irish ubull, Lithuanian obuolys, Old Church Slavonic jabloko "apple"), but the exact relation and original sense of these is uncertain (compare melon).
A roted eppel amang þe holen, makeþ rotie þe yzounde. ["Ayenbite of Inwit," 1340]
In Middle English and as late as 17c., it was a generic term for all fruit other than berries but including nuts (such as Old English fingeræppla "dates," literally "finger-apples;" Middle English appel of paradis "banana," c. 1400). Hence its grafting onto the unnamed "fruit of the forbidden tree" in Genesis. Cucumbers, in one Old English work, are eorþæppla, literally "earth-apples" (compare French pomme de terre "potato," literally "earth-apple;" see also melon). French pomme is from Latin pomum "apple; fruit" (see Pomona).
As far as the forbidden fruit is concerned, again, the Quran does not mention it explicitly, but according to traditional commentaries it was not an apple, as believed by Christians and Jews, but wheat. ["The Heart of Islam: Enduring Values for Humanity," Seyyed Hossein Nasr, 2002]
Apple of Discord (c. 1400) was thrown into the wedding of Thetis and Peleus by Eris (goddess of chaos and discord), who had not been invited, and inscribed kallisti "To the Prettiest One." Paris, elected to choose which goddess should have it, gave it to Aphrodite, offending Hera and Athene, with consequences of the Trojan War, etc.

Apple of one's eye (Old English), symbol of what is most cherished, was the pupil, supposed to be a globular solid body. Apple-polisher "one who curries favor" first attested 1928 in student slang. The image of something that upsets the apple cart is attested from 1788. Road apple "horse dropping" is from 1942.
apple pie Look up apple pie at Dictionary.com
attested from 1580s, from apple + pie; noted by 1893 as a typical American dish. Apple-pie bed as a name for a childish prank is recorded from 1781; supposedly from the way of making apple turnovers, but some think it a folk etymology of French nappe pliée "folded sheet."
applesauce (n.) Look up applesauce at Dictionary.com
by 1739, American English, from apple + sauce. Slang meaning "nonsense" is attested from 1921 and was noted as a vogue word early 1920s. Mencken credits it to cartoonist T.A. ("Tad") Dorgan. DAS suggests the word was thus used because applesauce was cheap fare served in boardinghouses.
applet (n.) Look up applet at Dictionary.com
by 1995, a diminutive formation from application + -let.
appliance (n.) Look up appliance at Dictionary.com
1560s, "action of putting into use," from apply + -ance. Meaning "instrument, thing applied for a purpose" is from 1590s.
applicability (n.) Look up applicability at Dictionary.com
1650s, from applicable + -ity.
applicable (adj.) Look up applicable at Dictionary.com
1560s, "pliable," with -able + Latin applicare (see apply). Meaning "capable of being applied" is from 1650s; earlier in this sense was appliable (mid-15c.).
applicant (n.) Look up applicant at Dictionary.com
"one who applies," late 15c., from Latin applicantem (nominative applicans), present participle of applicare (see apply).
application (n.) Look up application at Dictionary.com
early 15c., "the bringing of something to bear on something else," from Old French aplicacion (14c.), from Latin applicationem (nominative applicatio) "a joining to, an attaching oneself to," noun of action from past participle stem of applicare (see apply). Meaning "sincere hard effort" is from c. 1600. Meaning "a formal request to be hired for a job or paid position" is by 1851.
applied (adj.) Look up applied at Dictionary.com
"put to practical use," (as opposed to abstract or theoretical), 1650s, from past participle of apply. Earlier it was used in a sense of "folded" (c. 1500).
applique (n.) Look up applique at Dictionary.com
1841, from French appliqué "work applied or laid on another material," noun use of past participle of appliquer "to apply" (12c.), from Latin applicare (see apply).
apply (v.) Look up apply at Dictionary.com
late 14c., "to put (one's faculties, etc.) to some task or career," late 14c., from Old French aploiier "apply, use, attach" (12c., Modern French appliquer), from Latin applicare "attach to, join, connect;" figuratively, "devote (oneself) to, give attention," from ad- "to" (see ad-) + plicare "fold" (see ply (v.1)). The etymological sense is "bring things in contact with one another." Of lotions, from early 15c. Meaning "seek a job by submitting an application for one" is from 1851. A by-form applicate is recorded from 1530s. Related: Applied; applying.
appoint (v.) Look up appoint at Dictionary.com
late 14c., "to decide, resolve; to arrange the time of (a meeting, etc.)," from Anglo-French appointer, Old French apointier "make ready, arrange, settle, place" (12c.), from apointer "duly, fitly," from phrase à point "to the point," from a- "to" (see ad-) + point "point," from Latin punctum (see point (n.)). The ground sense is "to come to a point (about some matter)," therefore "agree, settle." Meaning "put (someone) in charge" is early 15c. Related: Appointed; appointing.
appointed (adj.) Look up appointed at Dictionary.com
with qualifying adverb, "equipped, furnished," 1530s, from past participle of appoint (v.).
appointee (n.) Look up appointee at Dictionary.com
1768, after French appointé, from apointer (see appoint + -ee).
appointment (n.) Look up appointment at Dictionary.com
early 15c., "an agreement," also "a fixing of a date for official business," from Middle French apointement, from apointer (see appoint). Meaning "act of placing in office" is attested from 1650s.
Appomattox Look up Appomattox at Dictionary.com
eccentric spelling of plural of Appomattoc, name of a local subgroup of the Powhatan (Algonquian) confederacy in Virginia (first attested as Apamatic, 1607). Site of last battle for Army of Northern Virginia (CSA) in the American Civil War, and of Lee's surrender to Grant in Wilmer McLean house, April 9, 1865.
apportion (v.) Look up apportion at Dictionary.com
1570s, from Middle French apportionner, from Old French aporcioner "apportion, share out," from a- "to" (see ad-) + portioner "to divide into portions," from portion "share, portion" (see portion). Related: Apportioned; apportioning.
apportionment (n.) Look up apportionment at Dictionary.com
1620s, from apportion + -ment. Perhaps influenced by French apportionnement.
appose (v.) Look up appose at Dictionary.com
"to apply" (one thing to another), 1590s, either from French apposer (from a "to;" see ad-, + poser "to place;" see pose (v.1)), or else formed in English from Latin apponere (see apposite) on analogy of compose, expose, etc. In Middle English, an identical word was a variant spelling of oppose. Related: Apposed; apposing.
apposite (adj.) Look up apposite at Dictionary.com
1620s, "well-put or applied, appropriate," from Latin appositus "contiguous, neighboring;" figuratively "fit, proper, suitable," past participle of apponere "apply to, put near," from ad- "near" (see ad-) + ponere "to place" (past participle positus; see position (n.)).
apposition (n.) Look up apposition at Dictionary.com
"application" (of one thing to another), mid-15c., originally in grammatical sense, from Latin appositionem (nominative appositio), noun of action from past participle stem of apponere "to put to" (see apposite). General sense is from 1540s.