psychodysleptic /sʌɪkəʊdɪˈslɛptɪk/adjective 1noun 1forms 3 adjective1 •That brings on a dreamlike mental state; hallucinogenic.Bridget Boone […] invited me to consider a couple of late-night bongs, as a kind of psychodysleptic Sominex, to help me sleep […]. — 1996 noun1 •Such a substance formspsychodysleptics · more psychodysleptic · most psychodysleptic