cuss like a sailor

cuss like a sailor

To use profanities or vulgar language very freely or frequently. (An allusion to the rough language presumed to be used by navy personnel.) My little sister has been cussing like a sailor ever since she started college. My granny is the sweetest old lady you'll ever meet, but she cusses like a sailor when she gets to talking about someone or something she doesn't like.
See also: cuss, like, sailor
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
See also: