marred
adj.adj. damaged or spoiled so that something is no longer perfect. You use this to describe a situation or object that was good until one bad thing happened.
adj. damaged, spoiled, or impaired in quality or appearance. Often used as a participial adjective to describe a surface or a reputation that has been negatively affected by a flaw.
The beautiful view is marred by the ugly new fence.
The athlete's otherwise perfect career was marred by a single doping scandal in his final year of competition.
The pristine landscape, once a sanctuary for local wildlife, is now marred by the industrial scars of recent mining operations and heavy machinery tracks.
From Middle English marred, merred (“troubled, distressed, vexed, bewildered”), from Old English *mierred, ġemyrred (“disturbed, troubled”), past participle of Old English mierran, ġemyrran (“to hinder, obstruct, force, trouble, err”), equivalent to mar + -ed.
From mar.
Often follows a linking verb like 'is', 'was', or 'remains'. It frequently appears in the phrase 'marred by' followed by the cause of the damage.