bonkers

[bong-kerz]

adjective

Slang.

1. mentally unbalanced; mad; crazy.

bonkers

/ ˈbɒŋkəz /

adjective

1. slang,  mad; crazy

Word History and Origins

Origin of bonkers¹

1945–50; of uncertain origin; for final element, -ers

Word History and Origins

Origin of bonkers¹

C20 (originally in the sense: slightly drunk, tipsy): of unknown origin

Example Sentences

Flocks of fans aren't rushing to travel agents in the same way they did two years ago, because that would just be bonkers.

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"The charges against them are completely bonkers," he added.

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If he sees rust now, he will “go bonkers,” he says.

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But even by its chaotic standards, the 2025 season is proving to be historically bonkers.

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Only then did things suddenly go completely bonkers.

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When To Use

Where does the word bonkers come from?

Bonkers is a funny-sounding word. It's a goofy, lighter, informal way to say "crazy" or "nuts”—but keep in mind that’s it not so fun to make fun of people’s mental health.Its origins are unclear, but bonkers is first recorded as British naval slang for "a bit drunk" in the 1940s—perhaps acting like someone has bonked, or hit, them on the head.The roots of these other words may get a rise—of laughter or surprise—out of you. Run on over to our roundup of them at "Weird Word Origins That Will Make Your Family Laugh."