i Register
In some senses, mar is marked as obsolete. Watch for register when choosing this word.
verb
To spoil; to ruin; to scathe; to damage.
[…] and putteth ether many a good mā by ignorance in ieopardy of his life, or marreth good medicines to the great diſhoneſtie both of the Phiſician and of Goddes worthy creatures, the herbes and medecines:
Prospero: […]huſh, and be mute / Or elſe our ſpell is mar'd.
noun
A blemish.
For concealing deep mars, some manufacturers offer putty sticks in colors that match their panels.
noun
Alternative form of mere (“a body of standing water”).