croaker
nounUK /ˈkrəʊkə/
US /ˈkroʊkər/
A croaker is a fish that makes a loud croaking sound.
We caught a croaker near the shore and it grumbled at us.
OTHER MEANINGS
2. A person who complains in a low, grumbling voice.
The old croaker at the back of the room kept muttering about the noise.
3. A frog or toad that croaks.
At night the croakers in the pond sang loudly.
4. A pessimistic person who predicts bad things.
Don't be a croaker; the team still has a chance to win.