Yecch!

yecch

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?