Definition of "bad taste in one's mouth" in English

Noun

1. A feeling that 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.

2. 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.

3. A feeling of disappointment and frustration.