boo
Boo (intj) means an exclamation shouted to scare someone, usually while jumping out unexpectedly. Example: “The little girl hid behind the sofa and shouted "boo!" at her dad.”
How to use boo
Learner’s notesIn plain EnglishA word to scare someone, a shout of disapproval, or slang for a sweetheart.
The "sweetheart" sense is informal slang, common in casual speech and social media.
Word forms
- Plural
- boos
- Third person singular
- boos
- Past tense
- booed
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Can you complete this real example?
The little girl hid behind the sofa and shouted "_____!" at her dad.
Etymology
From an earlier form "boh," coined to imitate a sudden, startling shout.
Synonyms
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Related words
Rhymes for boo
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What does “boo” mean?
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What is the difference between 'boo' and 'cheer'?
What is the difference between 'boo' and 'hiss'?
Is 'boo' formal or informal?
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