adverb, noun which may take the genitive case particle 'no'
each in one's own way; as one pleases; just as one likes
Describes people doing things individually according to their own preferences, often in a group where each person acts freely. Commonly used adverbially with に or as a の-adjective.
The children each drew a picture in their own way.
休日は家族が思い思いに過ごしている。
On holidays, each family member spends the day as they please.
The children are playing in the park each in their own way.
The guests came to the party wearing whatever outfits they each liked.