Synonyms of unwarranted

1 Syllable
wrong
2 Syllables
undue, off-base, groundless, pricey, unfair, unapt, bum-steer, unjust, pricier
3 Syllables
improper, unearned, unsporting, pirated, overkill, baseless, unfitting, bottomless, faked-out, misguided, unfounded, outlawed, illegal, ungrounded, gratuitous, uncurbed
4 Syllables
unjustified, undeserved, unprovoked, out-of-place, out-of-season, unapproved, unbefitting, uncalled-for, exorbitant, extralegal, unmerited, disinformed, foundationless, unreasoned, untempered
5 Syllables
unreasonable, indefensible, inexcusable, unjustifiable, overindulgent, unconscionable, unmeasurable, inapposite, unwarrantable, immoderate, unauthorized, inordinate
6 Syllables
uncorroborated