psychedelic

Of, containing, generating, or reminiscent of drug-induced hallucinations, distortions of perception, altered awareness, etc.

With those drugs has come the psychedelic philosophy, an impassioned belief in the self-revealing, mind-expanding powers of potent weeds and seeds and chemical compounds known to man since prehistory but wholly alien to the rationale of Western society.

Having bright colours, abstract shapes, etc. reminiscent of drug-induced hallucinations or distortions of perception.

There was a woman sitting on the edge of his bed. She had coral-orange hair, beryl-blue eyes, arched brows, freckles, a coy smile, a psychedelic labcoat and she was, he suddenly realized, his best friend of over twenty years.

Awesome, cool, groovy.

Any psychoactive substance (such as LSD or psilocybin) which, when consumed, causes perceptual changes (sometimes erratic and uncontrollable), visual hallucination, and altered awareness of the body and mind.

I was going to become a three-drug connection to all my friends, psychedelics, hash and pot.