Synonyms of unjustified

2 Syllables
undue, groundless, unjust, needless
3 Syllables
pirated, baseless, insulting, unfounded, gratuitous
4 Syllables
undeserved, unwarranted, unprovoked, unapproved, injudicious, iniquitous, foundationless
5 Syllables
unjustifiable, immoderate, unauthorized
6 Syllables
uncorroborated