a.

1. 魚的
2. 似魚的
3. 【口】可疑的；靠不住的
   His excessive politeness seemed fishy.

   他禮貌過度周到，令人覺得有些可疑。

   There was something fishy about that guy.

   那傢伙行為可疑。

4. 無表情的

adj.

1. relating to or resembling fish or a fish.
2. informal arousing doubt or suspicion.