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Region: UK | Usage example: That suggestion is barking mad.

Barking mad

Meaning

Completely crazy or irrational.

Usage

Used informally to describe absurd ideas.

Origin & History

Origin notes can vary by region and source; this page gives the commonly reported explanation and usage context.

From dogs barking wildly, suggesting lunacy.

British slang widely used in the 19th century.

Related Idioms

Barking up the wrong tree

Accusing or pursuing the wrong person/idea; making a false assumption.

Barking up the right tree

Pursuing the correct idea or person.

Barking up a tree

Pursuing a mistaken line of thought.

More Idioms

Break the ice

To do or say something to relieve tension or get conversation going in a social situation.

Cut to the chase

Skip ahead to the most important or exciting part of something.

The ball is in your court

It is now your turn to take action or make a decision.

Throw in the towel

To concede defeat or admit a struggle isn't worth continuing.