Soporific/ˌsɑːpəˈrɪfɪk/ Definition 1 of 2Pro Tip 1/3Feeling Drowsy Describes something that makes you feel sleepy, not necessarily at bedtime. The lecture was so soporific I nearly dozed off. Pro Tip 2/3Not Always Negative Can be used positively for something calming or peacefully boring. I find the sound of the ocean waves soporific. Pro Tip 3/3Literary Use Often used in literature to enhance imagery of sleepiness or monotony. The poet described the noon sun as soporific, dulling active minds.