Lose your marbles Meaning in English
expression
Definition
To go crazy, act in a very strange or irrational way, or start losing control of your mind. It's an informal, playful expression.
Usage & Nuances
Very informal; typically said in a joking or light-hearted way. Common in conversations when someone acts unusually or seems forgetful. Similar to 'go crazy' or 'lose your mind', but less serious.
Example Sentences
If you keep talking to yourself, people will think you've lost your marbles.
basic
Grandpa acts so funny sometimes, I wonder if he's losing his marbles.
basic
Don't mind her—she's just lost her marbles after the long day.
basic
Moving to a new country at 70? People said my dad had lost his marbles, but he proved them wrong.
natural
I thought I was losing my marbles when I couldn't find my keys for the third time today.
natural
Sometimes, with all the stress, I feel like I'm about to lose my marbles.
natural