1. A negative or distressing experience while traveling
The flight delays and lost luggage made for a bad trip.
Os atrasos de voo e a bagagem perdida resultaram em uma má viagem.
2. A negative psychological experience caused by hallucinogenic drugs, especially LSD or psilocybin
He had a bad trip after taking too much LSD at the concert.
Ele teve uma má viagem depois de tomar LSD demais no concerto.