Definition of a bad (or bitter or nasty) taste in the (or USsomeone's) mouth in English:

a bad (or bitter or nasty) taste in the (or USsomeone's) mouth

phrase

informal
  • A strong feeling of distress or disgust following an experience:

    ‘betrayal always leaves a nasty taste in the mouth’
    • ‘I was in no mood to pursue the issue but the experience did leave a bad taste in my mouth.’
    • ‘Afterwards, Charles had made it all seem so reasonable, so perfectly normal, but whenever Maria recollected that scene, she experienced a bad taste in her mouth.’
    • ‘I had two experiences that will forever leave a bad taste in my mouth.’
    • ‘It was a good movie, but the whole experience left a bad taste in my mouth, because for the $15 I spent on that one flick, I could have rented three, and I already had the popcorn and soda at home.’
    • ‘It always leaves a bad taste in my mouth too but people should realise that it is the owner who makes these decisions not the Agent.’
    • ‘The whole experience left a bitter taste in my mouth.’
    • ‘And, for those who still have a bitter taste in their mouth following The Tuxedo, this is Chan's chance for redemption.’
    • ‘After Shadows, experience with Hollywood left a bad taste in his mouth, so from that point forward Cassavetes either self-financed his films or worked with complete creative control.’
    • ‘If the review just gives the reviewer's reaction to a cd, a reader is left with a bad taste in their mouth and wondering what angle the reviewer is coming from.’
    • ‘While I'm trying not to let this show sour my entire experience, it definitely left a bad taste in my mouth and made me realize that Edmonton is not my left-wing Mecca in this right-wing province.’