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lose your marbles

Idiom Mental

Meaning

to become crazy or mentally unstable

Example Sentences

"My boss must have lost his marbles to approve such a risky project."

Related Expressions

A friend is a treasure

A true friend is invaluable and precious.

build up your confidence

to gradually become more confident

break the ice

to start a friendly conversation in an awkward situation

safeguard your system

to protect your computer system or network from attacks

in high spirits

feeling cheerful and happy

spread your wings

to start doing new and independent things