замкну́ться

rare #13912

1.
to close, to be closed, to lock, to be locked
Круг замкну́лся.
The circle closed.
Subject is a thing (circle, chain, lock, electric circuit).
2.
to lock oneself in, to shut oneself in
Он замкну́лся в свое́й ко́мнате.
He shut himself in his room.
3.
to withdraw into oneself, to become withdrawn, to keep to oneself
После ссо́ры она́ замкну́лась в себе.
After the quarrel she withdrew into herself.
Often замкнуться в себе.

Examples

Мальчик, постоянно дразнимый одноклассниками, замкнулся в себе.
The boy, constantly teased by his classmates, withdrew into himself.
Он замкнётся, если ты будешь на него кричать.
He'll withdraw into himself if you yell at him.
Девочка замкнулась и перестала общаться с друзьями.
The girl withdrew into herself and stopped talking to her friends.
Ребёнок, озлобляемый насмешками, замкнулся в себе.
The child, embittered by the mockery, withdrew into himself.
После развода он совсем замкнулся в себе.
After the divorce, he completely withdrew into himself.
Обманувшийся в друге, он замкнулся в себе.
Disappointed in his friend, he withdrew into himself.

Imperative
ты	замкни́сь
вы	замкни́тесь

Active present	-
Active past	замкну́вшийся	withdrawn, reclusive, secluded, closed-off
Passive present	-
Passive past	-
Gerund present	-
Gerund past	замкну́вшись	while doing (past)

(Derived from мкну́ть.)

Verb	Prefix	Meaning
замкну́ть	за-	to lock; to close (a circuit)
замкну́ться	-	to close; to lock oneself in; to withdraw into oneself

LockedUnlock verb prefix groups