IdiomThe AbsurdEnglish

off the wall

Meaning: Unusual; peculiar.

Example: “Her off-the-wall costume ideas always win the contest.”

Origin: American, from the late 1960s, most plausibly drawn from wall-based sports like handball, racquetball, or squash, where a ball's rebound off the wall is genuinely unpredictable — no player can be entirely certain which direction it will bounce back once it leaves the wall. That same unpredictability transferred naturally to describing an idea, comment, or piece of behavior so unconventional that nobody can quite guess where it came from or where it's headed next. No source manages to fully verify the sports connection over any other possible origin, but it remains by far the most commonly cited and most intuitively fitting explanation.

More English idioms

  • old-boy network The male connections that a man acquires, usually while in college or the military, later…
  • old fuddy-duddy A person who is old-fashioned and not open to new technology or ideas.
  • old hat Old-fashioned, or so familiar as to be boring.
  • put something on hold To postpone something; on the phone, to make someone wait without hanging up.
  • on a treadmill In a dull and boring routine.
  • on the ball Mentally sharp or alert; well-prepared; efficient.

Explore another collection: Tongue Twisters

Tricky phrases to practice out loud, from languages around the world.

Browse all tongue twisters →

Keep exploring

Explore all idioms →