Lose one's ability to reason soundly; become confused or irrational; also 'slip a gear.'
Examples:
- She must have slipped a cog or she would never have gone out barefoot in December.
Origin: c. 1930; variant from 1960s
Synonyms: slip a gear, slip one
Lose one's ability to reason soundly; become confused or irrational; also 'slip a gear.'
Examples:
Origin: c. 1930; variant from 1960s
Synonyms: slip a gear, slip one