not even 커녕

Noun/Adverb + 커녕 V/Adj/이다, 아니다 + ~기 커녕 This indicates that not only is something negated, but something even worse is negated as well. (far from~, not even~) Often used with topic markers 은/는 like ~은커녕, ~는커녕.

점심은커녕 아침도 못 먹었어요.

I haven't even had breakfast, let alone lunch.

빨리는커녕, 그냥 걷는 것도 힘들어요

Far from being fast, I can barely even walk.

집안일 하기는커녕 자기 쓰레기도 안 버려요.

Far from doing household chores, he doesn't even throw away his own trash.

→ When you want to use it with a verb or adjective, nominalize it with ~기 and then attach ~는커녕.