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Longman Dictionary of Contemporary English
▪ Four cuts of trancey exchange from Future Rhythm, with the pay-off being hugely psychedelic.
▪ Gareth wore of course his psychedelic jacket.
▪ He wore no suit, but trousers, waistcoat and Paisley tie fashion for the psychedelic movement of the 1960s.
▪ In doing so, he relies heavily on the work of ethno-botanist and psychedelic frontiersman Terence McKenna.
▪ Ladbroke Grove urban guerilla psychedelic sci-fi warriors probably sums it up.
▪ She was bouncing around in a tent-like dress, patterned in psychedelic swirls of purple and brown.
▪ The Psychedelics Encyclopedia lists nine families of different psychedelic drugs.
The Collaborative International Dictionary

colorful \colorful\ adj.

  1. having striking color. Opposite of colorless.

    Note: [Narrower terms: changeable, chatoyant, iridescent, shot; deep, rich; flaming; fluorescent, glowing; prismatic; psychedelic; red, ruddy, flushed, empurpled]

    Syn: colourful.

  2. striking in variety and interest. Opposite of colorless or dull. [Narrower terms: brave, fine, gay, glorious; flamboyant, resplendent, unrestrained; flashy, gaudy, jazzy, showy, snazzy, sporty; picturesque]

  3. having color or a certain color; not black, white or grey; as, colored crepe paper. Opposite of colorless and monochrome.

    Note: [Narrower terms: tinted; touched, tinged; amber, brownish-yellow, yellow-brown; amethyst; auburn, reddish-brown; aureate, gilded, gilt, gold, golden; azure, cerulean, sky-blue, bright blue; bicolor, bicolour, bicolored, bicoloured, bichrome; blue, bluish, light-blue, dark-blue; blushful, blush-colored, rosy; bottle-green; bronze, bronzy; brown, brownish, dark-brown; buff; canary, canary-yellow; caramel, caramel brown; carnation; chartreuse; chestnut; dun; earth-colored, earthlike; fuscous; green, greenish, light-green, dark-green; jade, jade-green; khaki; lavender, lilac; mauve; moss green, mosstone; motley, multicolor, culticolour, multicolored, multicoloured, painted, particolored, particoloured, piebald, pied, varicolored, varicoloured; mousy, mouse-colored; ocher, ochre; olive-brown; olive-drab; olive; orange, orangish; peacock-blue; pink, pinkish; purple, violet, purplish; red, blood-red, carmine, cerise, cherry, cherry-red, crimson, ruby, ruby-red, scarlet; red, reddish; rose, roseate; rose-red; rust, rusty, rust-colored; snuff, snuff-brown, snuff-color, snuff-colour, snuff-colored, snuff-coloured, mummy-brown, chukker-brown; sorrel, brownish-orange; stone, stone-gray; straw-color, straw-colored, straw-coloured; tan; tangerine; tawny; ultramarine; umber; vermilion, vermillion, cinibar, Chinese-red; yellow, yellowish; yellow-green; avocado; bay; beige; blae bluish-black or gray-blue); coral; creamy; cress green, cresson, watercress; hazel; honey, honey-colored; hued(postnominal); magenta; maroon; pea-green; russet; sage, sage-green; sea-green] [Also See: chromatic, colored, dark, light.]

    Syn: colored, coloured, in color(predicate).


agitated \agitated\ adj.

  1. troubled emotionally and usually deeply. Opposite of unagitated. agitated parents

    Note: Narrower terms are: demoniac, demoniacal ; distraught, overwrought; {disturbed, jolted, shaken; feverish, hectic; frantic, frenetic, phrenetic, frenzied; psychedelic ; {rampageous, raging, frenzied ; {wild-eyed . Also See: discomposed, excited, impatient, tense, unquiet, unsteady.

  2. 1 throwing oneself from side to side.

    Syn: tossing

  3. physically disturbed or set in motion; as, the agitated mixture foamed and bubbled. Opposite of {unagitated and left alone, allowed to stand.

    Note: [Narrower terms are: churning, churned-up, roiling, roiled, roily, turbulent ; {stirred.]

Douglas Harper's Etymology Dictionary

occasionally psychodelic, 1956, of drugs, suggested by British-born Canadian psychiatrist Humphry Osmond (1917-2004) in a letter to Aldous Huxley and used by Osmond in a scientific paper published the next year; from Greek psykhe- "mind" (see psyche) + deloun "make visible, reveal," from delos "visible, clear," from PIE root *dyeu- "to shine" (see diurnal). In popular use from 1965 with reference to anything producing effects similar to that of a psychedelic drug or enhancing the effects of such a drug. As a noun from 1956.


a. 1 Of, containing, generating, or reminiscent of drug-induced hallucinations, distortions of perception, altered awareness etc. 2 (context of graphics, etc. English) Having bright colours, abstract shapes, etc. reminiscent of drug-induced hallucinations or distortions of perception. interj. (context hippie slang English) awesome, cool, groovy n. Any psychoactive substance (such as LSD or psilocybin) which, when consume, causes perception changes (sometimes erratic and uncontrollable), visual hallucination, and altered awareness of the body and mind.

  1. adj. producing distorted sensory perceptions and feelings or altered states of awareness or sometimes states resembling psychosis; "psychedelic drugs like psilocybin and mescaline"

  2. having the vivid colors and bizarre patterns associated with psychedelic states; "a psychedelic painting"

  3. of a mental state characterized by intense and distorted perceptions and hallucinations and feelings of euphoria or sometimes despair; "a psychedelic experience"


The psychedelic is a concept the name of which is derived from the Ancient Greek words psychē (ψυχή, "soul") and dēloun (δηλοῦν, "to make visible, to reveal"), translating to "mind-revealing".

Related phenomena include:

  • Psychedelic drug (also known as a psychedelic substance or simply a psychedelic), a psychoactive drug whose primary action is to alter cognition and perception; well known psychedelics include LSD, psilocybin mushrooms, mescaline and DMT, while drugs such as cannabis and MDMA are also sometimes considered psychedelics
  • Psychedelic experience, a temporary altered state of consciousness induced by the consumption of psychedelic drugs
  • Psychedelic art, art inspired by the psychedelic experience
  • Psychedelia, a subculture surrounding the psychedelic experience, based on appreciation of psychedelic art and the use of psychedelic drugs
  • Psychedelic music, popular music influenced by psychedelia, aiming to replicate or enhance the psychedelic experience
    • Psychedelic rock, originating in the mid-1960s
    • Psychedelic pop, originating in the mid-1960s
    • Psychedelic soul, originating in the late 1960s
    • Psychedelic folk, originating in the late 1960s and early 1970s
    • Psychedelic trance (also known as psytrance or simply psy), originating in the late 1990s
  • Psychedelic era, a time of social, musical and artistic change related to psychedelia (from the early 1960s to the mid-1970s)
  • Psychedelic literature, literature related to psychedelic drugs and the psychedelic experience
  • Psychedelic film, a film genre influenced by psychedelia and the psychedelic experience
  • Psychedelic therapy, therapeutic practices involving the use of psychedelic drugs, primarily to assist psychotherapy

Usage examples of "psychedelic".

Shar peered ahead into the psychedelic fog, every muscle and nerve alive with tension, and started when Tom Cadge tapped her shoulder.

Black boys and girls waved a psychedelic poster of Dassie Dred that was making the rounds at the University of the West Indies and other schools throughout Central and South America.

Stefi led Findhorn ahead to a small room draped with psychedelic curtains and furnished with a low table, candles and cushions, but no chairs.

Electrical discharges in the limbic system sometimes result in symptoms similar to those of psychoses or those produced by psychedelic or hallucinogenic drugs.

DOOM PATROL, we meet hermaphroditic aliens and transvestite city streets, orgone cops and psychedelic pranksters, Gnostic terrorists and insect theologians and cultists who worship Jack the Ripper as God.

Turn an evening at the lab with Winston Shreve into a psychedelic delight.

Lars was a graying, wine-torn Zen beatnik champ, and young Devlin was a psychedelic challenger with a higher-than-wine insinuation.

Foreground, a flushed Plex, dressed to the waist and struggling into a violently psychedelic silk blouse.

She wiped the psychedelic patterns from the media pads, sorted the games and toys into the right bins, put the chairs back into line and reflated their one leaky jelfoam mattress.

T-shirt, and a look in his eyes that still smoldered from some psychedelic scorcher that had made him swear off forever.

I was amazed to find psychedelic drugs in homes where I would never have mentioned them two years ago -- if all this were true, I could write an ominous screed to the effect that the hippy phenomenon in the Haight-Ashbury is little more than a freak show and a soft-sell advertisement for what is happening all around them.

That was good solid space they were lost in, not this soupy psychedelic space they have on TV now, all tricks with music and lights, tricks he associates with the movie 2001, an unpleasant association since that was the time Janice ran off with Charlie and all hell broke loose on the home front.

Nobody, the Dadaist politician and psychedelic prankster of DOOM PATROL.

Nutmeg Nutmeg can be used for a psychedelic experience, since it does contain the ingredient elemicin, which has hallucinatory properties.

The laugh lines around his eyes creased, and he smiled at the psychedelic sky, the shimmering mist and the majestic pillars of light on the horizon.