Synonyms of the word 
SOMNOLENT → ASLEEP - SLUMBEROUS - SLUMBERY - SLUMBROUS
somnolent
- adj. Drowsy or sleepy.
- adj. (dated) Causing literal or figurative sleepiness; soporific.
asleep
- adj. In a state of sleep; also, broadly, resting.
- adj. (slang) Inattentive.
- adj. (of a body part) Having a numb or prickling sensation accompanied by a degree of unresponsiveness.
- adj. (euphemistic) dead.
slumberous
- adj. Sleepy, drowsy.
- adj. Sleep-inducing.
slumbery
- adj. (obsolete) Sleepy, slumberous.
slumbrous
- adj. Alternative form of slumberous.
If you are interested in words, visit the following sites :
- wiktionary.org/somnolent For complete definition of a word
- 1word.ws/somnolent to play with words, suffixs, prefixs, etc.