constantreminder
nounUK /ˈkɒnstənt rɪˈmaɪndə/
US /ˈkɑːnstənt rɪˈmaɪndər/
Something that keeps making you think about a thing again and again.
The sticky note on her desk was a constant reminder to call her grandma.
OTHER MEANINGS
2. A repeated message that helps you not forget to do something.
The alarm on his phone was a constant reminder to take his medicine.
3. A person or thing that always brings a certain thought to mind.
The old photo was a constant reminder of their summer trip.
4. A steady warning that keeps you careful.
The sign by the pool was a constant reminder to walk slowly.