Synonyms of ill-founded
- 1 Syllable
- null, mad, bad, wrong, void
- 2 Syllables
- untrue, unsound, false
- 3 Syllables
- sophistic, fallacious, invalid, baseless, reasonless
- 4 Syllables
- unscientific, illogical, irrational, nugatory, unreasoned
- 5 Syllables
- unreasonable
- 6 Syllables
- inoperative