Reverse Dictionary: MAR

ADJECTIVES
MARPLOT that mars a plot or defeats a plot or design → 1850

NOUNS – PERSON
MARPLOT one who mars or defeats a plot or design by officious interference, or hinders the success of any undertaking → 1708

VERBS
CORRUMP to bring to naught, to destroy, to mar, to spoil, to make useless → a1340 obs.
DISABUSE to mar, to spoil → 1900 Sc. (Bk.)
GOTCH to spoil, to mar → 1900 Sc. (Bk.)
JIGGER to mar, to spoil, to ruin; to deface → 1912 US criminals’ sl. (Bk.)
JIM UP to damage, to mar, to deface → 1913 Amer. dial.
MARGULLIE ► MURGULLIE ► MURGULLY to disfigure, to mar, to mangle; to mismanage, to abuse; to mar any business; to bungle → 1721 Sc. obs.
MISGOOGLE ► MISGRUGLE ► MISGUGGLE to disfigure, to spoil, to mar; to handle roughly; to rumple → 1742 Sc. 
MISMAGGLE to spoil., to mar; to disorder → 1742 Sc. obs.
MISMAR to disarrange, to mar → 1804 Sc. obs.