1
distorted(unclear, blurry)
1
doubtful(adjective, weak, obscure, rough, dark)
1
dreary(adjective, dull, dark, gloomy, faint)
1
dubious(adjective, rough, vague, unknown, unclear)
1
dusk(adjective, dull, dark, gloomy, faint)
1
flat(adjective, dull, dark, gloomy, faint)
1
flickering
1
gray(adjective, dull, dark, gloomy, faint)
1
hushed(adjective, weak, pale, faded)
1
imperfect
1
inchoate
1
incomprehensible
1
indecipherable
1
indecisive
1
indefinable
1
insensible
1
invisible
1
lackluster(adjective, dull, dark, gloomy, faint)
1
lightless(adjective, dull, dark, gloomy, faint)
1
low(adjective, weak, pale, unclear, hazy)
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APASmart Define. (2015). ill-defined thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/ill-defined/thesaurus/synonyms
ChicagoSmart Define. 2015. "ill-defined thesaurus" https://smartdefine.org/ill-defined/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, ill-defined thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/ill-defined/thesaurus/synonyms>.
MLASmart Define. "ill-defined thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/ill-defined/thesaurus/synonyms>