(しんゆう)

しんゆう
noun
close friend, best friend
formalperson
1. close friend, best friend, intimate friend
A friend with whom one has a very close and trusting relationship.
(かれ)(わたし)親友(しんゆう)
He is my best friend.
I met up with a close friend from childhood after a long time.
親友(しんゆう)(なん)でも(はな)せる
I can talk about anything with my best friend.
My best friend moved away and I feel lonely.
I still meet up with my best friend from university every month for a meal.

親友(しんゆう) implies a deeper, more intimate level of friendship than 友達(ともだち). Someone you trust completely and can confide in.

Compound: (しん) (close/intimate) + (ゆう) (friend)

Friendship hierarchy

Common expressions

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Slightly formal compared to 友達(ともだち). Used in both spoken and written Japanese.