like a fish in shape, smell, taste, or the like.

consisting of fish.

abounding in fish.

Informal . improbable, as a story; unlikely.

Informal . of questionable character; suspicious

The sudden knockout was fishy.

dull and expressionless

fishy eyes.

adjective

aboveboard , honest , likely , probable , real , truthful , unquestionable , unsuspicious

adjective

ambiguous , doubtable , dubious , dubitable , equivocal , far-fetched , funny , implausible , improbable , odd , problematic , queer , questionable , shady , suspect , uncertain , unlikely , doubtful , suspicious , (colloq.) extravagant , cold , dull , exaggerated , farfetched , fishlike