Taru adjective, Adverb taking the 'to' particlesudden; unexpected

Adverb (fukushi)how; why

Nounmiswriting a word; using the wrong kanji to write a word

Expressions (phrases, clauses, etc.), Nounultimate fate of the universe; end of the universe

Expressions (phrases, clauses, etc.)no concern of mine; nothing to do with me