1 (often foll. by than) by preference; for choice (would rather not go; would rather stay than go).
2 (usu. foll. by than) more truly; as a more likely alternative (is stupid rather than honest).
3 more precisely (a book, or rather, a pamphlet).
4 slightly; to some extent; somewhat (became rather drunk; I rather think you know him).
5 Brit. (as an emphatic response) indeed, assuredly (Did you like it? - Rather!).
Phrases and idioms:
had rather would rather.
Etymology: ME f. OE hrathor, compar. of hraeligthe (adv.) f. hraeligth (adj.): see RATHE
Useful english dictionary. 2012.