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informal An exclamation of disgust, contempt, or displeasure. A: "Here's your dinner, Timmy." B: "Yecch! I hate meatloaf!" You don't even want to know what they were trying to get me to do during the audition. Yecch.
Yec(c)h!(jɛk and jɛtʃ)
exclam. Horrible!; It’s yucky! Oh, yech! What’s that stuff?