rather (adv.) Look up rather at Dictionary.com
Old English hraþor "more quickly, earlier, sooner," also "more readily," comparative of hraþe, hræþe "quickly," related to hræð "quick," from Proto-Germanic *khrathuz (cf. Old Norse hraðr, Old High German hrad). The base form rathe was obsolete by 18c. except in poetry; superlative rathest fell from use by 17c. Meaning "more willingly" is recorded from c.1300; sense of "more truly" is attested from late 14c.