marred

(adjective) ruined, made ugly

Example Sentences:

The fireworks celebration was marred by drunk teenagers fighting in the streets.

East Vancouver’s beautiful neighbourhood was marred when a Wal-Mart came to town.

A: How was your date last night?
B: It was marred when my date’s ex-boyfriend joined us.

From the News:

Phillipine vote marred by violence

Media:

Similar idioms:

1. gain a foothold
2. hit the town
3. paint the town red