甚だしい (Hanahadashii) is a Japanese i-adjective meaning “extreme, excessive, terrible, intense”.
Meanings
- i-adjectiveextreme; excessive; terrible; intense; severe; serious
Examples
あんなことを彼女に言うなんて非常識も甚だしい。
It's quite absurd of you to tell her that sort of thing.
Sentences from Tatoeba (CC BY 2.0 FR).