Yechy is a derived term of yech.
As an adjective yechy
is (informal) highly offensive; causing aversion or disgust.
As an interjection yech is
(chiefly|us) an exclamation of disgust.
yechy
English
Adjective
(er)
(informal) Highly offensive; causing aversion or disgust.
Synonyms
* disgusting, distasteful, foul, loathsome, nasty, offensive, repugnant, revolting, unpleasant, wicked, yucky
Related terms
* yech yech
English
Interjection
(
en interjection)
(chiefly, US) An exclamation of disgust.
Yech! This jelly donut is the worst on the planet!
Synonyms
* yuck
Derived terms
* yechy