Somnolence is often used to describe temporary sleepiness, especially after eating or during monotonous activities. The seminar's audience battled somnolence after the uninspiring speech.
Pro Tip 2/3
Not Just Tired
Somnolence implies a stronger urge to sleep than just being tired; it's a step closer to actually sleeping. His somnolence was so intense that he nodded off while standing on the train.
Pro Tip 3/3
Descriptive Imagery
Use somnolence to vividly depict a scene where someone is struggling to stay awake. She fought somnolence as the lecturer's voice faded into a monotonous drone.