次第に (しだいに, shidaini) Japanese meaning: gradually | Kotomoraく
なっ
て
き
た
。
The sky gradually grew dark.
His health is gradually recovering.
Usage patterns
次第に〜になるto gradually become ~
The sky gradually became dark.
次第に〈動詞〉てくるto gradually start ~ing (change approaching the speaker)
I gradually started to understand what he was saying.
次第に増える/減るto gradually increase / decrease
The population is gradually decreasing.
次第に〜に慣れるto gradually get used to ~
I gradually got used to my new life.
Expressions
事と次第によってはdepending on the circumstances; if the situation calls for it
次第に describes a gradual progression like 日に日に, but it doesn't carry the day-by-day imagery and can describe change over any timescale.
次第に means 'gradually' over any timeframe, whereas 日増しに specifically marks change that accrues day by day.