boo-boo

American  

[boo-boo] / ˈbuˌbu /

noun

Slang.

PLURAL

boo-boos

1. a minor injury; owie.

   My dad was doing dishes and kissing boo-boos way back in the 1960s.

2. a stupid or silly mistake; blunder.

   Even people with loads of sewing experience make boo-boos when creating a piece!

   Synonyms:

   slip-up , slip , screwup , goof , fumble , fluff , flub

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boo-boo British  

noun

1. informal  an embarrassing mistake; blunder

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Etymology

Origin of boo-boo

An Americanism dating back to 1950–55; baby talk

Example Sentences

Widely ridiculed on social media for his lack of knowledge, Mr Harris apologised for what he described as an "awful boo-boo".

From BBC

And be clear that the illness is called cancer — not a “boo-boo” or a sickness.

From Seattle Times

It might be your internet company’s fault, a boo-boo with your home equipment or interference from your neighbor’s Call of Duty game night.

From Washington Post

He has two boys, ages 4 and 2, who Davenport said don’t really understand their father is missing most of a finger but do ask if he has a “boo-boo” on his hand.

From Seattle Times

Some attestation forms seem impractical, requiring parents to interview their pre-school-age children about their health, when some that age can’t distinguish between a boo-boo and a sore throat.

From New York Times