なり

become, get, is, as soon as, no sooner ... than

n a̠ ɾʲ i → 成る
verb Uncommon #19,505
become, get The conjunctive form of なる, used to link this change with what follows.
JA: 空が暗くなり、雨が降り始めた。
EN: The sky grew dark, and it began to rain.
Conjugation of 成る

彼女は血を見て怖くなり顔をそむけた。

She got scared when she saw the blood and looked away.

その子は大きくなり、今では背が私の腰まである。

The child has grown so much that they're now up to my waist.

治安は良くなり希望が見えてきました

Public safety has improved, and hope is beginning to emerge.

— ファイト・クラブ (1999)

まもなく赤い毛布も見えなくなり、あたりとの高さも同じになってしまいました。

Before long, the red blanket disappeared from view too, and it was level with everything around it.

顔が青くなり、しかし、何の違いもありません。

His face turned pale, but nothing changed.

— ウィキッド 永遠の約束 (2025)

今日は寒くなり、雪が降るかもしれません。

It will be colder today, and it might snow.

auxiliary Rare #21,139
is Literary or old-fashioned; often used in set phrases and dramatic or formal speech.
JA: これが答えなり。
EN: This is the answer.

汝の未来の子なり

I am the child of your future.

— JUNO/ジュノ (2007)

彼も人なり我も人なり。

He is human, and so am I.

空腹は最善のソースなり。

Hunger is the best sauce.

時間は怒りの薬なりとはうまく言ったものである。

They were right when they said that time is the best medicine for anger.

見ることは信ずることなり。

Seeing is believing.

私は必要は発明の母なりという意見を持っている。

I believe that necessity is the mother of invention.

conjunction Rare #30,859
as soon as, no sooner ... than Follows the dictionary form of a verb.
JA: 家に帰るなり、手を洗った。
EN: As soon as I got home, I washed my hands.
and ... ever since In ~たなり~ない, follows the past form of a verb to say that something has not happened since.
JA: 彼は家を出たなり、帰ってこない。
EN: He left home and hasn’t come back since.

俺がここに来るなりこいつらは俺について何か言い始めた

As soon as I got here, these guys started saying something about me.

— レザボア・ドッグス (1992)

ファン達は有名人と出くわすなり、彼にサインを求めた。

As soon as the fans ran into the celebrity, they asked him for autographs.

彼は一週間前に家を出たなり帰ってこない。

He left home a week ago and hasn’t come back since.

入ってくるなり、彼は倒れた。

As soon as he came in, he collapsed.

noun Rare #39,674
appearance, attire, the way someone is dressed Often used in expressions like そんななりで (dressed like that); can sound colloquial or old-fashioned.
JA: そんななりで出かけないで。
EN: Don't go out dressed like that.
one's own way, one's own Used after a person or group to mean their personal way or opinion, as in 私なりの意見 (my own opinion).
JA: 私なりに考えてみます。
EN: I'll think it through in my own way.

何大きななりして!

Look at the size of you!

— 東京物語 (1953)

なんでそんななりしてるんですか

Why are you dressed like that?

— Godzilla Minus One (2023)

こんななりじゃ行けないもの

I can't go out looking like this.

— 魔女の宅急便 (1989)

その問題については、私なりの意見があります。

I have my own opinion on that issue.

preposition Rare #39,675
or, whether ... or ... Often repeated after alternatives to mean “A or B” or “whether A or B.”
JA: コーヒーなりお茶なり、好きなものを選んでください。
EN: Choose whichever you like, coffee or tea.

降りるなり

As soon as they got off...

— ブレット・トレイン (2022)

あらゆる国の歴史は男なり女なりの心の中に始まる。

The history of every country begins in the hearts and minds of its men and women.

たいていの人は、人間をただその人の成功なり、あるいは幸運によってのみ判断する。

Most people judge a person solely by their success or good fortune.

Sounds similar to