"fishier" in the adjective sense
1. fishy
of or relating to or resembling fish
"the soup had a fishy smell"
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"
Source: WordNet® (An amazing lexical database of English)
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