excusal
/ˈɛkskyuːzəl/Definitions
1. noun
A formal statement or certificate that excuses someone from an obligation, duty, or requirement.
“The teacher gave her student an excusal for missing school due to illness.”
2. noun
A reason or explanation for not being present at an event, meeting, or other social engagement.
“She gave us an excusal for not attending the party, citing prior commitments.”