adv. 25B6; adverb
I'd rather you went : SOONER, by preference, preferably, by choice.
it's rather complicated : QUITE, a bit, a little, fairly, slightly, somewhat, relatively, to some degree, comparatively; informal pretty, sort of, kind of.
her true feelingsor rather, lack of feelings : MORE PRECISELY, to be precise, to be exact, strictly speaking.
she seemed sad rather than angry : MORE; as opposed to, instead of.
it was not impulsive, but rather a considered decision : ON THE CONTRARY, instead.