na-adjective
Slang term formed by reversing the syllables of ひどい. Used in casual, often playful contexts to describe something terrible, cruel, or harsh.
See also: ひどい
あの先生の課題、ドイヒーすぎる。
That teacher's assignment is way too harsh.
ドイヒーなこと言わないでよ。
Don't say such cruel things.