loose fish

English

Noun

loose fish (plural loose fish)

1. (colloquial) Someone of irregular or dissolute habits.
   • 1874, Marcus Clarke, For the Term of His Natural Life, IV.2:

     Mr. Wade began to repent of his too easy taking of matters in the beginning. Not that he had a suspicion of Rex, but that he had remembered that Dick was always a loose fish.

2. (obsolete) A prostitute.