round the bend

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round the bend

He thought the old man living alone was going round the bend.

Definition
  1. Adjective (Predicative): Informal or slang term meaning mentally irregular, insane, or crazy. This expression describes someone whose behavior or thinking is considered extremely irrational, eccentric, or out of touch with reality.
Usage
  • This phrase is exclusively used in informal, colloquial contexts. It is considered slang and can be humorous, derogatory, or descriptive depending on tone and context.
  • It functions as a predicative adjective, meaning it typically comes after a linking verb like "be," "go," or "drive."
  • It is a fixed idiom; the words are not used in their literal sense.
Examples
  • "After the third day without sleep, I thought I was going round the bend."
  • "The constant noise from the construction site is driving me round the bend!"
  • "Some of his conspiracy theories make him sound completely round the bend."
Advanced Usage
  • "to drive someone round the bend": A common construction meaning to irritate or frustrate someone to the point of madness.
    • Example: "Her constant complaining drives her colleagues round the bend."
Variants and Related Words
  • Round the twist: A very similar British slang idiom with the same meaning.
    • Example: "He's gone completely round the twist."
  • Barmy (adj.): Another informal British term for crazy or foolish.
  • Balmy (adj.): An alternative spelling of "barmy" with the same meaning.
Synonyms
  • Crazy
  • Insane
  • Mad
  • Bonkers (informal)
  • Loony (informal)
Related Idioms
  • Off one's rocker: Another informal idiom meaning crazy or insane.
  • Out to lunch: Slang implying someone is not thinking clearly or is detached from reality.
  • Not playing with a full deck: A humorous idiom suggesting someone lacks intelligence or sanity.
round the bend

He thought the old man living alone was going round the bend.

Adjective
  1. informal or slang terms for mentally irregular
    • it used to drive my husband balmy