to reach an extreme; to reach a limit; to terminate; to come to an end
extremely
to be stuck; to be in a dilemma; to be at a loss
to be decided; to be settled
失礼極まる言い方だった。
That was an extremely rude way of putting it.
感極まり思わず涙を流した。
Overcome with emotion, I involuntarily shed tears.
緊張が極まって声が出なくなってしまった。
The tension peaked and I couldn't get my voice out.