Fishy1. (a.) Consisting of fish; fishlike; having the qualities or taste of fish; abounding in fish.
2. (a.) Extravagant, like some stories about catching fish; improbable; also, rank or foul.
Thesaurus Entries
ambiguous, amoral, beguiling, blank, catchy, conscienceless, corrupt, corrupted, criminal, crooked, dark, deadpan, deceiving, deceptive, delusive, delusory, devious, dishonest, dishonorable, doubtable, doubtful, dubious, dubitable, eellike, empty, equivocal, evasive, expressionless, fallacious, FALSE, felonious, fraudulent, funny, glassy, hallucinatory, ill-got, ill-gotten, illusive, illusory, immoral, impassive, implausible, improbable, indirect, inexpressive, insidious, misleading, not kosher, odd, peculiar, piscatorial, piscatory, pisciform, piscine, poker-faced, problematic, queer, questionable, rotten, selachian, shady, shameless, sharkish, shifty, sinister, slippery, strange, suspect, suspicious, trickish, tricksy, tricky, uncertain, unconscienced, unconscientious, unconscionable, underhand, underhanded, unethical, unexpressive, unlikely, unprincipled, unsavory, unscrupulous, unstraightforward, vacant, without remorse, without shame, wooden