somnolence somnivolent • somnolency · · · Info · Definitions · Synonyms · Characters · · somnolence · · Text Latin · · Script 10 · · Length Definitions · · · (noun) a very sleepy state. Synonyms: sleepiness, drowsiness. Example: "Sleepiness causes many driving accidents." · · Noun Definition 1 Synonyms · · · sleepiness · · Synonym 1 drowsiness · · Synonym 2 Characters · · c latin small letter c U+0063 e latin small letter e U+0065 l latin small letter l U+006C m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073