docile (adj.) Look up docile at Dictionary.com
late 15c., "easily taught," from Italian or French docile, from Latin docilis "easily taught," from docere "to show, teach, cause to know," originally "make to appear right," causative of decere "be seemly, fitting," from PIE root *dek- "to take, accept." Sense of "obedient, submissive" first recorded 1774.