3
non top dog(noun, person, failure, loser)
3
unlucky fellow(noun, person, misfortune, loser, Unwin)
2
failure(noun, person, misfortune, loser, Unwin)
2
flopperoo(noun, person, misfortune, loser, Unwin)
2
lame duck(noun, person, misfortune, loser, Unwin)
2
might-have-been(noun, person, misfortune, loser, Unwin)
2
never-was(noun, person, misfortune, loser, Unwin)
2
non-achiever(noun, person, misfortune, loser, Unwin)
2
under dog(noun, person, misfortune, loser, Unwin)
2
unfortunate(noun, person, misfortune, loser, Unwin)
1
dud(noun, person, misfortune, loser, Unwin)
1
eight ball(noun, person, misfortune, loser, Unwin)
1
goof-up(noun, person, misfortune, loser, Unwin)
1
misfit(noun, person, misfortune, loser, Unwin)
1
non-starter(noun, person, misfortune, loser, Unwin)
1
toolbox(noun, person, slang, fool, individual)
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APASmart Define. (2016). underdog thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/underdog/thesaurus/narrower
ChicagoSmart Define. 2016. "underdog thesaurus" https://smartdefine.org/underdog/thesaurus/narrower (accessed September 21, 2026).
HarvardSmart Define 2016, underdog thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/underdog/thesaurus/narrower>.
MLASmart Define. "underdog thesaurus" 28 March 2016. Web. 21 September 2026. <https://smartdefine.org/underdog/thesaurus/narrower>