いよいよ

いよいよ is an adverb with two main usages: expressing that a long-anticipated moment has finally arrived, and expressing that something is increasingly or more and more intensifying. It carries a sense of buildup and anticipation that distinguishes it from similar words like ついに or やっと.

Finally / At last

The most common usage of いよいよ is to indicate that something long-awaited or long-expected is about to happen or has just happened. It conveys a sense of excitement, tension, or significance – the feeling that "the moment has come."

Unlike やっと, which emphasizes relief after a long wait or struggle, いよいよ emphasizes the dramatic buildup to an important moment. It can be used for both positive and negative anticipated events.

More and more / Increasingly

いよいよ can also describe a situation that is escalating or intensifying over time. In this usage, it is similar to ますます (more and more).

This usage often appears with verbs like なる (to become) and expressions describing change.

Nuances

• いよいよ often implies that something has been building up and is now reaching a critical or climactic point. It is used for events that feel momentous or decisive.
• It tends to appear in contexts where the speaker has been aware the event was coming – unlike ついに, which can describe something unexpected finally happening.
• In formal writing and news, いよいよ is used to announce the start of significant events such as seasons, ceremonies, or major undertakings.