Synonyms of groundless
- 2 Syllables
- flimsy, idle, idlest, empty, false
- 3 Syllables
- causeless, baseless, bottomless, unfounded, ungrounded, gratuitous
- 4 Syllables
- unjustified, illusory, illogical, chimerical, unwarranted, unprovoked, uncalled-for, nonexistent, foundationless, unsupported
- 5 Syllables
- unjustifiable, unauthorized, imaginary
- 6 Syllables
- uncorroborated