非常に難しい問題だ

N4 非常に hijou ni extremely, very N5 難しい muzukashii difficult N5 問題 mondai problem, question

N3 非 hi / ara.zu un-, mistake, negative N3 常 jou / tsune, toko- usual, ordinary, normal N3 難 nan / kata.i, -gata.i, muzuka.shii, muzuka.shii, mutsuka.shii, -niku.i difficult, impossible, trouble N4 問 mon / to.u, to.i, ton question, ask, problem N4 題 dai topic, subject, sujet

N4 〜し shi Indicates multiple reasons or qualities, connects clauses or adjectives, means besides that, and also N5 〜に ni Indicates destination, target, arrival point, specific time, or person receiving an action