bummer
/ˈbʌmə(r)/noun
informal <非正式>
1
a bummer
a thing that is annoying or disappointing令人烦恼（或失望）的事：the team's relegation is a real bummer.
该队的降级真是令人失望。
1.1
- an unpleasant reaction to a hallucinogenic drug迷幻药引起的不爽。
2
- N. Amer. a loafer or vagrant〈北美〉流浪汉; 游手好闲的人。
词源
mid 19th cent.: perhaps from German Bummler， from bummeln 'stroll， loaf about'.