Oxford und MW bieten (heute) :
Definition of blech in English:
Used to express disgust.
‘the milk had the consistency of over-beaten egg whites—blech’
‘I'm at home with a cold—nothing too serious, just an overabundance of mucus (blech) and a cough’
1960s: probably imitative of the sound of gagging or retching.
interjection \ˈbleḵ, ˈblek\
Popularity: Bottom 10% of words
Definition of blech
—used to express disgust
… the fresh wounds in my gums, where my wisdom teeth used to be, were still trickling a tinny-tasting stream of blood that all the water in the world couldn't rinse off my tongue. Blech. — Megan Seling, The Stranger (Seattle, Washington), 8 May 2013
In a blind test, four staffers tried each of the five soups. We heated them on a stove, suggested “for best results,” though you can microwave instead. Bottom line. You say bisque, we say blech. Most of the soups were mediocre and tasted highly processed. — Consumer Reports, December 2012