めかし込こむ

godan verb (-mu), intransitive verb

dress up; deck oneself out

Used when someone puts effort into dressing up or grooming themselves, often with a slightly showy or self-conscious nuance.

• 彼かの女じょはパーティーのためにめかし込こんでいた。

  She was all dressed up for the party.

• そんなにめかし込こんで、どこに行いくの？

  Where are you going, all decked out like that?