プログレッシブ和英中辞典(第4版)の解説
あらたまる【改まる】
❶〔新しくなる〕
年が改まった
The new year has arrived [come round].
年号が改まり平成と称した
This was the beginning of a new era, which was called the Heisei period.
古い規則は新しい規則に改まった
The old regulations were replaced by [with] new ones.
❷〔よくなる〕be improved
古い制度がだいぶ改まった
The old system was improved considerably.
彼の性質が急に改まった
He reformed suddenly.
❸〔格式張る〕be formal; be ceremonious; be stiff
改まって
in a formal manner
改まった言葉を使う
use [speak in] formal [stiff] language
そんなに改まらなくともよい
You don't have to be so formal about it.
彼女は改まった事が好きだ
She likes to be ceremonious about everything.