simple past tense and past participle of justify
"The detective was justified in his decision to break down the door after hearing screams inside."
In plain English: To justify something means to show that it is right, fair, or has good reasons behind it.
"The teacher was justified in giving extra credit to students who participated actively."
having words so spaced that lines have straight even margins
"The typesetter adjusted the kerning until every line was justified and aligned perfectly on both sides."
Having a justification.
"The protest was justified because the government had ignored all reasonable complaints from its citizens."