/ˈjəstəˌfī/

verb

1. to show or prove to be right

Those who lack the courage will always find a philosophy to justify it.

- Albert Camus (1913 - 1960)

2. to make even or true, as lines of type by proper spacing

When you "justify" text in a Word document, you give your text straight edges on both sides of the paragraph. Justifying extends each line of your text from the left margin to the right margin.

- Microsoft