wink at vs further

wink at is not an adjective while further is an adjective.

Word	Noun	Adjective	Verb	Adverb
wink at	No	No	Yes	No
further	No	Yes	Yes	Yes

As verbs, further is a hypernym of wink at; that is, further is a word with a broader meaning than wink at:

Other hypernyms of wink at include advance, boost, encourage, promote.

wink at (adjective)	further (adjective)
	more distant in especially degree

wink at (verb)	further (verb)
give one's silent approval to	contribute to the progress or growth of
	promote the growth of

wink at (adverb)	further (adverb)
	to or at a greater distance in time or space (`farther' is used more frequently than `further' in this physical sense)
	to or at a greater extent or degree or a more advanced stage (`further' is used more often than `farther' in this abstract sense)
	in addition or furthermore