A variant or informal spelling of 'blurp'; an onomatopoeia representing a short, dull sound like a bubble popping.
An onomatopoetic word created to imitate sound, likely influenced by 'blurp,' 'burp,' and 'plop.' The exact origin is unclear, but it mimics the action it describes.
Onomatopoeia like 'blup' are some of the oldest words in human language—our ancestors probably made these sound-imitation words before developing any true vocabulary.
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