δικαιόω/dikaioō

This word is an action. It is a verb.

This word can mean to do what is right, fair, or just.
This word can mean to justify. When used this way, this word talks about declaring someone to be righteous and treating them as if they have done the right thing.
This word can mean to vindicate. When used this way, this word talks about proving or showing that someone has done the right thing.
This word can mean to free someone or something.