胸むねがいっぱいになる

expression, godan verb (-ru)

be deeply moved; get choked up; be overwhelmed with emotion

Describes a strong emotional surge that makes one's chest feel full, often to the point of tears. Used for both positive and negative overwhelming feelings.

See also: 胸いっぱい

• 卒そつ業ぎょう式しきで、胸むねがいっぱいになって言こと葉ばが出でなかった。

  At the graduation ceremony, I was so overwhelmed with emotion that I couldn't speak.

• 彼かの女じょの優やさしい手て紙がみを読よんで、胸むねがいっぱいになった。

  Reading her kind letter, I felt a lump in my throat.