The word "yuck" is an informal way to express disgust or strong dislike towards something.
Sentences with «yuck»
Intestinal parasites are high in yuck factor, high in pet discomfort, and on the list of diseases people and pets can share. (amcny.org)
-LSB-...] Yuck Stops Here The Southern Special Whimsy Wednesday Project Parade Moonlight & Mason Jars I2 Wildly Original Think & Make -LSB-...] (livelaughrowe.com)
I have also seen a noticeable improvement in the amount of yuck on her teeth. (1800petmeds.com)