To justify a decision, action, or idea means to show or prove that it is reasonable or necessary. No argument can justify a war Ministers agreed that this decision was fully justified by economic conditions
To justify printed text means to adjust the spaces between the words so that each line of type is exactly the same length. Click on this icon to align or justify text. see also left-justify, right-justify
show to be reasonable or provide adequate ground for; "The emergency does not warrant all of us buying guns"; "The end justifies the means"
To set type or prepare text composition to a specified width or measurement so that the left and/or right-hand margins of the printed matter will be aligned Justification may be accomplished by adjusting the spacing between words, or between words and characters (letterspacing) so as to fill the measure with each full line of type to top