hallucinogenic
US /həˌluː.sɪ.noʊˈdʒen.ɪk/
UK /həˌluː.sɪ.noʊˈdʒen.ɪk/

1.
causing hallucinations
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The shaman used hallucinogenic plants in his rituals.
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Some mushrooms have hallucinogenic properties.
1.
a drug that causes hallucinations
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LSD is a well-known hallucinogenic.
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The use of hallucinogenics is illegal in many countries.