covertreason
nounUK /ˈkʌv.ət ˈriː.zən/
US /ˈkoʊ.vɝt ˈriː.zən/
A covert reason is a secret reason you keep hidden from other people.
She said she was tired, but her covert reason for leaving the party was that she missed her dog.
OTHER MEANINGS
2. A reason that is kept hidden on purpose to avoid trouble.
His covert reason for skipping practice was that he felt nervous.
3. An unstated cause behind an action that others cannot see.
The covert reason for the surprise gift was to say thank you.
4. A quiet, private explanation that is not shared openly.
The covert reason she smiled was a secret joke in her head.