shady vs fishy

shady and fishy both are adjectives.

Word	Noun	Adjective	Verb	Adverb
shady	No	Yes	No	No
fishy	No	Yes	No	No

As adjectives, shady and fishy are synonyms defined as:

Other synonyms of shady include funny, suspect, suspicious.

shady (adjective)	fishy (adjective)
quiet, dark, or concealed	of or relating to or resembling fish
of questionable honesty or legality	not as expected
not as expected
filled with shade