Home › Words › S › somnolyticsomnolyticsomnolytic means that prevents sleep.Among words judged in Lexicurio's Arena, somnolytic ranks #10,080 of 42,747 for Qualifying.EtymologyFrom somno- + -lytic.adjThat prevents sleepnounAny agent that has this effectDefinitions & examples from Wiktionary (CC BY-SA 3.0).