Withdraw into (one's) shell verb phrase
To isolate oneself from unwanted thoughts, situations or interactions with people
You can't grow up if you keep withdrawing into your shell.
Stop withdrawing into your shell. We need to talk.
Whenever encountering an argument, Peter always withdraws into his shell.
To act in a defensive manner
He withdrew into his shell when his opponent started attacking consistently and aggressively.
Used to tell someone not to stress about something
To tremble with fear
To finally get rid of fears, worries, or distress about something that has negatively affected you for a long time
A great anger or concern about something that is not important
The verb "withdraw" should be conjugated according to its tense.