溜ため込こむ

godan verb (-mu), transitive verb

accumulate; store up; hoard

Used for both physical items (money, goods) and intangible things (stress, emotions). Often implies keeping things inside without releasing them.

• 彼かれは給きゅう料りょうの半はん分ぶんを毎まい月つきため込こんでいる。

  He saves up half his salary every month.

• ストレスをため込こまないで、誰だれかに話はなしたほうがいいよ。

  Don't bottle up your stress; you should talk to someone.