leave a bad taste in one's mouth

/liːv ə bæd teɪst ɪn wʌnz maʊθ/

Meaning

This expression describes a situation, interaction, or experience that leaves someone with a lingering bad impression, feeling of unease, or regret. In relationships, it often refers to a conversation or event that ended poorly, making you feel uncomfortable or suspicious about the other person's motives.

Examples

  • The way he spoke to his mother really left a bad taste in my mouth.

    The way he spoke to his mother really left a bad taste in my mouth.

  • Our last conversation left a bad taste in my mouth, so I've been avoiding her.

    Our last conversation left a bad taste in my mouth, so I've been avoiding her.

  • The meeting went well overall, but his passive-aggressive comment left a bad taste in my mouth.

    The meeting went well overall, but his passive-aggressive comment left a bad taste in my mouth.

  • I wanted to trust them, but the sudden change in the contract terms left a bad taste in my mouth.

    I wanted to trust them, but the sudden change in the contract terms left a bad taste in my mouth.

  • Her dismissive attitude during the breakup left a bad taste in his mouth.

    Her dismissive attitude during the breakup left a bad taste in his mouth.

Common Mistakes

  • ✗ The argument left a bad taste in my tongue.

    ✓ The argument left a bad taste in my mouth.

    This is a fixed idiom. You must use 'mouth', not 'tongue' or any other body part.

  • ✗ His behavior left me a bad taste.

    ✓ His behavior left a bad taste in my mouth.

    The idiom requires the full prepositional phrase 'in [someone's] mouth' to make sense.

Related Expressions

leave a bitter tastesour the relationship get off on the wrong foot

Practice

  • The condescending tone she used during our talk really ___.

    💡 Use the past tense form of the idiom to describe a lingering negative feeling.

    Show answer

    left a bad taste in my mouth

  • I try not to let minor disagreements ___.

    💡 The base form of the idiom fits after 'let minor disagreements'.

    Show answer

    leave a bad taste in my mouth