out-of-bounds

American  

[out-uhv-boundz] / ˈaʊt əvˈbaʊndz /

adjective

1. Sports. being beyond or passing the limits or boundaries of a field, course, etc., marking the area within which the ball, puck, or the like is legally in play.

2. beyond any established boundaries or prescribed limits; forbidden; prohibited.

3. further than or beyond established limits, as of behavior or thought.

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out of bounds British  

adjective

1. (often foll by to) not to be entered (by); barred (to)

   out of bounds to civilians

2. outside specified or prescribed limits

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out of bounds Idioms  

1. Beyond established limits, breaking the rules, unreasonable. For example, Calling the teacher a liar—that's out of bounds. This expression alludes to the boundaries of the playing area in numerous sports and to the rules applying to them. Its figurative use dates from the 1940s. [Early 1800s] Also see within bounds.

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Etymology

Origin of out-of-bounds

First recorded in 1855–60

Example Sentences

Her degree also relied on specialist equipment, such as cameras and lighting, which could usually be rented through the university but was also out-of-bounds during Covid.

From BBC • Feb. 20, 2026

A double bogey at the second was followed by a bogey on the third, while a wayward out-of-bounds drive on the par-four fourth cost him another shot as his round began to unravel.

From BBC • May 18, 2024

Kickoffs short of the landing zone are treated the same as out-of-bounds kickoffs, and they’re spotted at the 40.

From Los Angeles Times • Mar. 26, 2024

Going out-of-bounds in such areas can be dangerous: Some of the millions of people who visit Yellowstone each year get badly burned by ignoring warnings not to stray off the trail.

From Washington Times • Dec. 28, 2023

He was out-of-bounds, on his own, snooping around without any idea of what he was looking for.

From "Stormbreaker" by Anthony Horowitz