Ichidan verb, transitive verb

  1. to warm (up), to heat (up).
  2. to sit on (an idea, plan, etc.), to keep to oneself, to nurse, to mull over.
  3. to renew (an old friendship).
  4. to take for oneself.

Variations

Pronunciation Kanji Kana Is Common
 
 
温める あたためる
 
 
温める あっためる
 
 
暖める あたためる
 
 
暖める あっためる

Contained Kanji Breakdown

warm
オン あたた.か ぬく (3rd, N2)
water, water radical (no. 85)
さんずい
to feed a prisoner
オン めぐ.む
day, sun, Japan
ひ にっ ニチ (1st, N5)
dish, a helping, plate
さら ベイ (3rd, N2)