Antonyms of adj fishy

1 of 2 senses of fishy

Sense 2
fishy, funny, shady, suspect, suspicious -- (not as expected; "there was something fishy about the accident"; "up to some funny business"; "some definitely queer goings-on"; "a shady deal"; "her motives were suspect"; "suspicious behavior")

INDIRECT (VIA questionable) -> unquestionable -- (incapable of being questioned; "unquestionable authority")

Similarity of adj fishy

2 senses of fishy

Sense 1
fishy -- (of or relating to or resembling fish; "the soup had a fishy smell")

Sense 2
fishy, funny, shady, suspect, suspicious -- (not as expected; "there was something fishy about the accident"; "up to some funny business"; "some definitely queer goings-on"; "a shady deal"; "her motives were suspect"; "suspicious behavior")
       => questionable (vs. unquestionable) -- (subject to question; "questionable motives"; "a questionable reputation"; "a fire of questionable origin")