convincingjustification

noun
UK /kənˈvɪnsɪŋ ˌdʒʌstɪfɪˈkeɪʃən/
US /kənˈvɪnsɪŋ ˌdʒʌstəfəˈkeɪʃən/

A reason that makes people believe something is right.

Her convincing justification for the extra day off persuaded the whole team.


OTHER MEANINGS

2. A proof strong enough to satisfy a judge or authority.

The lawyer offered a convincing justification for the delay in filing.

3. A believable explanation that removes blame or doubt.

He gave a convincing justification for missing the meeting.

4. A reason that makes an action seem fair and reasonable.

The report provided a convincing justification for the new budget.