得とく心しんがいく

expression, godan verb (iku/yuku class)

be convinced; fully understand and agree; be satisfied with an explanation

Used when someone comes to fully accept or understand something, often after receiving an explanation or reasoning. Implies a mental state of agreement and clarity.

• 彼かれの説せつ明めいを聞きいて、ようやく得とく心しんがいった。

  After hearing his explanation, I was finally convinced.

• その理り由ゆうを聞きいても、どうも得とく心しんがいかない。

  Even after hearing the reason, I'm not quite satisfied.