Third-person singular present tense of flump, meaning he/she/it drops or falls heavily.
Same root as 'flumping' with the -s suffix for third-person singular conjugation in present tense, following standard English verb conjugation rules.
Simple word conjugations like this show how English builds complexity from basic sounds—the onomatopoeia 'flump' combines with our regular grammar rules to create a whole family of related words.
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