Yeesh etymology in English

English word yeesh comes from Proto-Germanic *jukjaną (To itch.)

Dictionary entry	Language	Definition
*jukjaną	Proto-Germanic (gem-pro)	To itch.
ġyccan	Old English (ang)
*ȝuken	Middle English (enm)
yuck	English (en)	(countable) the sound made by a laugh. (uncountable) something disgusting (obsolete) To itch. Uttered to indicate disgust usually toward an objectionable taste or odour.
yeesh	English (en)	Expressing disgust; yuck, yech.. Expressing exasperation or impatience.. Expressing relief; phew, whew.

Yeesh etymology