noun
justification
jus-tih-fih-KAY-shun/ˌdʒʌstɪfɪˈkeɪʃn/
The establishing of someone or something as right.
The broken pipe and receipts provide justification for the repair expense.

Etymology
Built on “make just,” justification came to mean showing something to be right. A justification is the reason or explanation that performs that defense.
In context
I can't see any justification for this
More examples
- There is no justification for treating her unfairly.
- She offers several justifications for delaying the project.
- The pastor explains justification as being declared righteous before God.
Forms
justification · justifications
justify verb — To show to be right or reasonable.
justifiable adjective — Able to be defended as right or reasonable.
Similar words
- rationale
- Explains underlying reasoning without necessarily establishing that something is right.
- defense
- Answers criticism or accusations rather than simply supplying a reason.
- vindication
- Emphasizes clearing people of blame or proving them right.