Nouns

(n)soporific, hypnotica drug that induces sleep

Adjectives

(a)hypnoticof or relating to hypnosis
(s)hypnotic, mesmeric, mesmerizing, spellbindingattracting and holding interest as if by a spell“read the bedtime story in a hypnotic voice”, “she had a warm mesmeric charm”, “the sheer force of his presence was mesmerizing”, “a spellbinding description of life in ancient Rome”