Justify (verb)

1. To show or prove to be right or reasonable; to provide a good or sufficient reason for something.
2. To adjust the spaces between words in a line of text so that both the right and left edges are even.

Origin:

From latin justificare, from justus "just" + -ficare "to make".

Examples:

1. He was able to justify his actions to the committee.
2. The company"s decision to lay off employees was difficult, but they were able to justify it with the company"s financial struggles.
3. The teacher tried to justify the low grades by saying the class was very difficult.
4. She couldn't justify spending so much money on a dress.
5. The text on the page looked uneven, so he used the justify button to align it.