booby trap

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/ˈbuːbi ˌtræp/
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A hidden danger or trick that catches an unsuspecting person by turning a safe-looking action into the trigger.

Examples

  • The package contained a booby trap that would trigger when the lid opened.
  • The children set a booby trap with a bucket of water over the door.
  • The old joke worked because the booby trap looked like an ordinary chair.
  • The bomb squad found a booby trap behind the office door.
  • A tripwire can turn an ordinary doorway into a booby trap.

Similar words

mine
snare
practical joke
trap
catch
pitfall
explosive device
trap
gotcha
snare

Meanings

Hidden device set to harm

security
neutral
A concealed device, often an explosive, that is triggered when an unsuspecting person touches, opens, moves, or enters something that seems safe.

Examples

  • The bomb squad found a booby trap behind the office door.
  • Soldiers checked the abandoned building for booby traps before entering.
  • The package contained a booby trap that would trigger when the lid opened.
  • Investigators said the vehicle had been fitted with a booby trap.
  • A tripwire can turn an ordinary doorway into a booby trap.

Similar words

Trap or trick for the unwary

everyday
neutral
A hidden trick, catch, or practical joke arranged so that someone who acts without caution is surprised, embarrassed, or caught out.

Examples

  • The children set a booby trap with a bucket of water over the door.
  • The contract looked simple, but one clause was a booby trap for careless buyers.
  • The puzzle included a booby trap for anyone who ignored the units.
  • A fake error message served as a harmless booby trap in the game.
  • The old joke worked because the booby trap looked like an ordinary chair.

Similar words

Etymology

From booby, meaning a fool or naive person, plus trap. The phrase first referred to practical jokes and later came to name concealed devices meant to injure or kill.

FAQ

What does booby trap mean?

A booby trap is a hidden device, trick, or catch that surprises someone when they take an apparently safe action.

Is a booby trap always explosive?

No. It often means a hidden explosive device, but it can also mean a practical joke or figurative catch.

Can booby trap mean a prank?

Yes. The phrase originally referred to practical jokes, though modern use often suggests real danger.

Is booby-trap a verb?

Yes. The related verb means to set a booby trap in, on, or for something, as in a booby-trapped car.

What is the difference between a booby trap and a trap?

A booby trap is usually hidden and triggered by an unsuspecting person's own action.

Where does booby trap come from?

It combines booby, an old word for a fool or naive person, with trap.

Is boobie trap correct?

No. The standard spelling is booby trap for the noun phrase.

Can booby trap be used figuratively?

Yes. A clause, test question, or design flaw can be called a booby trap if it catches careless people.

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