温まる

1. Origins, structure, and basic meaning

• Structure: 温まる(あたたまる) is an intransitive verb describing a rise in temperature or becoming warm.
• Basic usage: It is used for hands or the body growing warm and for a comforting warmth of feeling.

2. Common pitfalls and similar expressions

• Compared with 温める
  • 温める(あたためる) is a transitive verb meaning to make something warm.
  • 手が温まる describes hands growing warm; 手を温める describes an action that warms them.
• Until the change occurs
  • 温まるまで means until something becomes warm, marking the endpoint of the change being awaited.