boo–boo
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plural
boo–boos
plural
boo–boos
Learner's definition of BOO–BOO
[count]
informal
1
:
a small injury (such as a bruise or scratch)
— used especially by children or when speaking to children
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She fell down and got a boo-boo.
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Did you get a boo-boo?
2
:
a foolish or careless mistake
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I made a slight boo-boo when I added up the numbers.
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a major diplomatic boo-boo
