13
collapse(verb, upset, break, drop, decline)
11
upset(verb, drop, disorder, disturb, fall)
10
pass out(verb, expression, phrasal verb, break, drop)
10
swoon(verb, fall, collapse, suffer, faint)
9
capsize(verb, upset, change, disturb, turn)
9
faint(verb, break, drop, give, fail)
8
black out(verb, expression, phrasal verb, fall, lose)
8
drop(verb, break, give, decline, release)
7
slump(verb, upset, drop, decline, release)
7
tip over(verb, expression, phrasal verb, upset, drop)
7
topple(verb, upset, break, drop, change)
7
tumble(verb, upset, drop, change, decline)
6
overturn(verb, upset, change, disturb, turn)
6
pitch(verb, upset, drop, change, decline)
5
fall(verb, upset, break, drop, decline)
5
fall down(verb, expression, break, drop, fail)
5
topple over
5
turn turtle(verb, expression, upset, turn, sink)
4
founder(verb, upset, break, drop, give)
4
go down(verb, expression, phrasal verb, upset, break)
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APASmart Define. (2015). keel over thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/keel_over/thesaurus/synonyms
ChicagoSmart Define. 2015. "keel over thesaurus" https://smartdefine.org/keel_over/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, keel over thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/keel_over/thesaurus/synonyms>.
MLASmart Define. "keel over thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/keel_over/thesaurus/synonyms>