lose (one's) marbles

(redirected from losing their marbles)

lose (one's) marbles

To be or become mentally deficient, incompetent, or deranged; to become of unsound mind. My poor grandmother started losing her marbles after she had a stroke. I've been so sleep deprived lately that it feels like I've lost my marbles!
See also: lose, marble

lose (all) one's marbles

 and lose one's mind
Fig. to go crazy; to go out of one's mind. What a silly thing to say! Have you lost your marbles? Look at Sally jumping up and down and screaming. Is she losing all her marbles? I can't seem to remember anything. I think I'm losing my mind.
See also: lose, marble

lose one's marbles

See also: lose, marble

lose your marbles

INFORMAL
If you lose your marbles, you become crazy. At 83 I haven't lost my marbles and my memory is, thank God, as clear as it ever was. People are talking about him as if he's lost his marbles. Note: You can also say that someone has all their marbles, meaning that they are not crazy. He's in his eighties but he clearly still has all his marbles.
See also: lose, marble

lose your marbles

go insane; become irrational or senile. informal
Marbles as a term for ‘a person's mental faculties’ probably originated as early 20th-century American slang. The underlying reference is apparently to the children's game played with multicoloured glass balls.
1998 Spectator At least, that is how I recall the event, but I am losing my marbles.
See also: lose, marble

lose your ˈmarbles

(informal) become crazy or mentally confused: They say the old man has lost his marbles because of the strange things he’s been saying, but I’m not so sure.
See also: lose, marble
References in periodicals archive ?
He also knows that given the choice between spending the afternoon watching Cash In The Attic to remind them they own nothing of worth, Countdown to remind them how they're losing their marbles and Doctors to show them the mortuary slab they're heading for, He too would prefer to blow his mind and his pension in a boozer.