bad-mouth

listen to the pronunciation of bad-mouth
Английский Язык - Английский Язык
If someone bad-mouths you, they say unpleasant things about you, especially when you are not there to defend yourself. Both men continually bad-mouthed each other. to criticize someone or something
bad taste in one's mouth
A feeling of disappointment and frustration
bad taste in one's mouth
A feeling of guilt, responsibility, or embarrassment as to cause nausea

Knowing that I had inadvertently aided a killer, left me with a bad taste in my mouth.

bad taste in one's mouth
A feeling something is morally despicable as to cause nausea

The more I thought of my orders, the more it left a bad taste in my mouth.

badmouth
To criticize or malign, especially unfairly or spitefully
bad mouth
{f} say embarrassing nasty and untrue things about a person; insult or criticize
badmouth
speak unfavorably about; "She badmouthes her husband everywhere"
badmouth
speak unfavorably about; "She badmouthes her husband everywhere
badmouth
{f} slander, libel, speak badly of, sharply criticize