1.AdjectiveNot justified, having no justification, unwarranted.
"the unjustified killing of an innocent"
2.AdjectiveNot justified (of text, arranged on a page or a computer screen such that the left and right ends of all lines within paragraphs are aligned)
"unjustified text in a wordprocessor"
3.Verbsimple past and past participle of unjustify