fail vs flush it

fail and flush it both are verbs.

Word	Noun	Adjective	Verb	Adverb
fail	No	No	Yes	No
flush it	No	No	Yes	No

As verbs, fail and flush it are synonyms defined as:

Other synonyms of fail include bomb, flunk.

fail (verb)	flush it (verb)
stop operating or functioning	fail to get a passing grade
deteriorate
prove insufficient
disappoint, prove undependable to; abandon, forsake
become bankrupt or insolvent; fail financially and close
be unsuccessful
fail to get a passing grade
fail to do something; leave something undone
judge unacceptable
be unable
fall short in what is expected