14
defeated(verb, adjective, characteristic, failure, loss)
8
beaten(adjective, characteristic, failure, loss)
7
subjugated(adjective, characteristic, failure, loss)
6
unsuccessful(adjective, characteristic, failure, loss)
6
winless(adjective, characteristic, failure, loss, defeated)
5
conquered(adjective, characteristic, failure, loss)
5
lose(verb, failure, process, loss)
5
losing(adjective, characteristic, failure, loss, winning)
5
overcome(adjective, characteristic, failure, loss)
5
overpowered(adjective, characteristic, failure, loss)
5
overwhelmed(adjective, characteristic, failure, loss)
5
routed(adjective, characteristic, failure, loss)
5
trounced(adjective, characteristic, failure, loss)
5
vanquished(adjective, characteristic, failure, loss)
4
crushed(adjective, characteristic, failure, loss)
4
fail(verb, failure, process, loss)
4
failing(adjective, characteristic, failure, loss)
4
falling(adjective, characteristic, failure, loss)
4
humbled(adjective, characteristic, failure, loss)
4
overthrown(adjective, characteristic, failure, loss)
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APASmart Define. (2015). undefeated thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/undefeated/thesaurus/antonyms
ChicagoSmart Define. 2015. "undefeated thesaurus" https://smartdefine.org/undefeated/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2015, undefeated thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/undefeated/thesaurus/antonyms>.
MLASmart Define. "undefeated thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/undefeated/thesaurus/antonyms>