Synonyms for Rather:

adv

in a way (adverb)
sort of.
moderately (adverb)
a little.
somewhat (adverb)
fairly.

adv.

all (adverb)
instead.
halfway (adverb)
partly.
instead (adverb)
instead, preferably.
kind of (adverb)
kind of.
rather (adverb)
a bit, a little, fairly, kind of, more or less, pretty, quite, slightly, sooner, sort of.

n.

beyond, by all means, certainly, exceptional, excessive, more, of course, over, overly, overmuch, surplus, too, Hyper-, most assuredly, no doubt about it. absolutely, agreed, big, exactly, fairly, great, more or less, precisely, pretty, right, yes, O.K.. a bit, a little, mildly, partly, slightly, vaguely. rather (noun)
instead, kind of, kinda, preferably, quite, sooner, sort of.

Other synonyms:

fairly. somewhat
pretty.
Other relevant words:
a bit, a little, absolutely, agreed, beyond, big, by all means, certainly, exactly, exceptional, excessive, fairly, great, instead, mildly, more, of course, over, overly, overmuch, partly, precisely, pretty, right, slightly, surplus, too, vaguely, yes, Hyper-, most assuredly.

Usage examples for rather

  1. " I would rather go alone," said Nelatu. – The White Squaw by Mayne Reid
  2. No, rather let it be! – The Comedies of Terence by Publius Terentius Afer
  3. I rather think I'll give a party myself. – Gossamer 1915 by George A. Birmingham