What it means
極まる means “extremely” or “utterly” and indicates that a quality has reached an exceptional degree. It follows a noun or a na-adjective stem and is especially common in formal, literary, and strongly evaluative descriptions. The expression often conveys the speaker’s judgment that something is extreme, excessive, or remarkable. 極まる is a fixed plain-form intensifying expression rather than an ordinary verb ending that is regularly changed for politeness.
Usage note
極まる does not normally become 極まります as a polite counterpart in this construction. In polite prose, restructure the sentence with an expression such as 非常に〜です or 極めて〜です instead.
Example sentences
この古い橋の設計は、危険極まるものだ。
The design of this old bridge is extremely dangerous.
彼の無責任極まる発言は、被災者の不安をいたずらにあおった。
His utterly irresponsible statement needlessly fueled the anxiety of the disaster victims.
突然の計画変更は、迷惑極まる話だ。
The sudden change of plans is an utterly troublesome matter.