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.
Used to allude that the last force, problem or burden which is seemingly minor and small causes a person, system or organisation to collapse or fail
Her husband's violent act last night was the straw that broke the donkey's back and she left him