bad mouth 

v., to curse or say negative things about something, usually another person.

Why did he want to bad mouth me?

bad mouth by The Doctor September 17, 2004

bad-mouth 

bad-mouth: say unkind, unflattering, embarrassing (and probably untrue) things about someone.

Iyad: "I don't believe what Ihab said. Why is he bad-mouthing

me?"
Reham: "He's probably jealous of your success."

bad-mouth by Iyad Mahdood January 26, 2013

a bad taste in my mouth 

a feeling that something is false or unfair, a feeling of ill will

I left the meeting with a bad taste in my mouth. There was a lot of dishonesty in the room.

a bad taste in my mouth by VAKI5 May 9, 2005

a bad taste in my mouth 

An idiom used to express feelings of regret and remorse, stemming from a realisation that one has willingly participated in behaviour that has led to an unforeseen and morally reprehensible outcome. The idiomatic use of eating serves to convey both the initial positive, tasteful, experience, as well as the negative, distasteful, after-effects.

Clearing the rain forest is how I make my money, but seeing locals driven from their homes has left a bad taste in my mouth.

a bad taste in my mouth by Sledgehead April 30, 2007

a bad taste in my mouth 

Having an unpleasant taste in youre mouth, mostly ment as a methaphore, but sometimes literally. It can be caused either by a feeling or an actual event.
Either way, if something gives you a bad taste in the mouth it is always bad.... really bad..

Catherine said: A beating from the love truncheon left a bad taste in my mouth

a bad taste in my mouth by baahhhh July 13, 2006

a bad taste in my mouth 

an ex that u wish u never dated

jimmy is a bad taste in my mouth

a bad taste in my mouth by ibk December 12, 2006

a bad taste in my mouth 

The feeling you get after working as a fluffer!

A man comes home from work (working as a male fluffer) in the porn industry.
Wife: How was your day today, dear?
Man: Don't even ask, I have a bad taste in my mouth!

a bad taste in my mouth by Mithrilo December 12, 2006