"psychedelic" in the adjective sense
1. psychedelic
producing distorted sensory perceptions and feelings or altered states of awareness or sometimes states resembling psychosis
"psychedelic drugs like psilocybin and mescaline"
2. psychedelic
having the vivid colors and bizarre patterns associated with psychedelic states
"a psychedelic painting"
3. psychedelic
of a mental state) characterized by intense and distorted perceptions and hallucinations and feelings of euphoria or sometimes despair
"a psychedelic experience"
Source: WordNet® (An amazing lexical database of English)
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