ずっと

The adverb ずっと expresses continuity, duration, or degree. It has several related but distinct uses depending on context.

Continuously / the whole time

The most common use of ずっと is to indicate that something has been happening without interruption over a period of time. It often pairs with ～ている to emphasize ongoing or sustained actions and states.

It can also express something that continues into the future.

Ever since / for a long time

ずっと can indicate that a state or action has persisted **since some point in the past**, often with ずっとまえ前 meaning "a long time ago."

Much / far (emphasizing degree)

When used with comparatives or adjectives, ずっと means "much" or "far more", emphasizing a large difference in degree.

All the way (spatial)

ずっと can describe continuous movement or extent through space, meaning **"all the way" or "straight ahead."**