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Ill-founded has 13 synonyms. The top synonyms for ill-founded are idle, groundless, unsupportable, vain, unwarranted, unfounded, unsupported, unsustained and 5 more. Another word for ill-founded is idle. Browse the full list below.
| Length
| Random | DefinitionA common synonym for ill-founded is idle. Other synonyms include groundless, unsupportable, vain, unwarranted.
Ill-founded has 13 synonyms listed on Thesaurasize.
(adj): having no strong foundation; not based on solid reasons or facts
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