slippedin
adjectiveUK /ˈslɪpt ɪn/
US /ˈslɪpt ɪn/
Put in quietly and quickly so nobody notices.
The teacher found a slipped-in note between the pages of the book.
OTHER MEANINGS
2. Added to a list or group without being noticed.
A slipped-in extra name appeared at the bottom of the guest list.
3. Said quickly in the middle of a conversation.
His slipped-in joke made everyone laugh during the meeting.
4. A small piece of paper or object pushed into a narrow space.
She pulled a slipped-in bookmark from between the pages.