to not (even) know the meaning of the word
01
to lack knowledge or understanding of a particular concept or term
![to {not} (even|) [know] the meaning of the word definition and meaning](https://cdn.langeek.co/photo/44878/original/?type=jpeg "to {not} (even|) [know] the meaning of the word definition and meaning")
Idiom
Informal
例
When it comes to modern technology, my grandparents do n't know the meaning of the word.
It's called mutual respect mate. You do n't even know the meaning of the word.
