眠気

1. Origins, structure, and basic meaning

• Structure: 眠気(ねむけ) means drowsiness, the feeling of becoming sleepy or wanting to sleep.
• Basic usage: It describes sleepiness after a meal or a change as drowsiness wears off.

2. Common pitfalls and similar expressions

• Sleepiness and being sleepy
  • 眠気を感じる means to feel drowsiness; 眠い is an adjective directly describing someone as sleepy.