Na-adjective (keiyodoshi), Noun

unreasonable; unnatural; unjustifiable

impossible

forcible; forced; compulsory

oft. adverbially as 〜に

Na-adjective (keiyodoshi)

excessive (work, etc.); immoderate

Suru verb, Intransitive verb

to work too hard; to try too hard

Interjection (kandoushi)

no way; not a chance; never; dream on

Colloquial

Noun which may take the genitive case particle 'no'

irrational

Mathematics