1
annul(verb, upset, reverse, void, overturn)
1
backslide(verb, drop, decline, settle, ease)
1
batten(verb, faint, extinguish, erase, darken)
1
be lost
1
be precipitated(verb, drop, decline, settle, ease)
1
become unconscious(expression, collapse, faint, succumb, usually)
1
belly up(verb, expression, break, drop, give)
1
bend(verb, break, drop, give, decline)
1
break(verb, drop, give, fail, yield)
1
break down(verb, expression, break, drop, give)
1
bring down(verb, expression, upset, drop, decline)
1
buckle(verb, break, drop, decline, settle)
1
cascade(verb, drop, decline, settle, ease)
1
conk out(verb, expression, phrasal verb, break, drop)
1
countermand(verb, upset, reverse, annul, void)
1
cover up(verb, expression, faint, extinguish, erase)
1
crack up(verb, expression, break, drop, give)
1
crash(verb, drop, decline, settle, ease)
1
cross out(verb, expression, faint, extinguish, erase)
1
crumple(verb, break, drop, give, fail)
11 years ago|2k views|share |citing 
APASmart Define. (2015). keel over thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/keel_over/thesaurus/synonyms
ChicagoSmart Define. 2015. "keel over thesaurus" https://smartdefine.org/keel_over/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, keel over thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/keel_over/thesaurus/synonyms>.
MLASmart Define. "keel over thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/keel_over/thesaurus/synonyms>