yuck1
(also yuk) informal
¦ exclamation used to express strong distaste or disgust.
¦ noun something messy or disgusting.
Origin
1960s (orig. US): imitative.
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yuck2
(also yuk) N. Amer. informal
¦ verb laugh heartily.
?(yuck it up) act so as to cause laughter; fool around.
¦ noun a hearty laugh.
Origin
1960s: of unknown origin.