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more and more; all the more; increasingly
at last; finally; beyond doubt
(at the) last moment; worst possible time
いよいよ出発の時が来た。
The time to depart has finally come.
いよいよ明日は待ちに待った卒業式を迎えます。
Tomorrow is finally the graduation ceremony.
いよいよ最終回を迎えた番組に涙が出た。
I teared up at the show's final episode.