入いり交まじる

godan verb (-ru), intransitive verb

to be mixed together; to intermingle

Describes things, people, or abstract elements existing together in a mixed state. Often used with ～と or ～が. The spelling 入り交じる is especially common when referring to people.

• 会かい場じょうには老ろう若にゃく男なん女にょが入いり交まじっていた。

  People of all ages and genders were mingling in the venue.

• 喜よろこびと悲かなしみが入いり交まじった複ふく雑ざつな気き持もちだ。

  It's a complicated feeling where joy and sadness are mixed together.