Preferably
Part of speech: adverb
Definition: In preference; by choice; in a preferable manner.
Sooner
Part of speech: adjective
Definition: Short in length of time from the present.
Part of speech: adverb
Definition: Immediately, instantly.rather.
Example sentence: Time is a sort of river of passing events, and strong is its current; no sooner is a thing brought to sight than it is swept by and another takes its place, and this too will be swept away.