bummer

باللغة العربية: خيبة أمل، أمر محبط

1. A disappointment, a pity, a shame. (colloquial) · That's a total bummer.
2. A psychedelic crisis; hallucinogenic drug use producing undesirable dysphoric psychological effects, most often fear, paranoia, and especially horrifying hallucinations; a bad trip. (dated, slang)

الجمع bummers