noun, noun which may take the genitive case particle 'no', na-adjective
English loanword used as a noun or adjectival noun. Often carries a dramatic or exaggerated tone, similar to calling someone 'crazy' or 'insane' in English. Can describe a person or a situation.
彼は完全にルナティックだ。
He's completely lunatic.
あのルナティックな計画は誰が
Who came up with that lunatic plan?