psychedelic
/ˌsaɪkəˈdɛlɪk/
adjective
a - used to describe a drug (such as LSD) that affects your thinking and causes you to see things that are not real
caused by the use of psychedelic drugs
suggesting the effects of psychedelic drugs by having bright colors, strange sounds, etc.
noun
plural -ics
[count] :a psychedelic drug (such as LSD)
US