1.
to become cloudy, to cloud over
Describes weather becoming overcast with clouds covering the sky. The opposite of 晴れる (to clear up).
2.
to fog up, to become dim
Can also describe glasses, mirrors, or windows fogging up.
TRANSITIVITY: 自動詞 (intransitive). No pair verb. Pattern: 空が曇る.
ASPECT: ている indicates resulting state. 曇っている = 'is cloudy' (current weather state).
COMMON PATTERNS:
- 空が曇る (sky becomes cloudy)
- 曇ってきた (it's getting cloudy)
- 眼鏡が曇る (glasses fog up)
- 曇り (noun: cloudy weather)
WEATHER VOCABULARY: 晴れる (clear), 曇る (cloudy), 降る (rain/snow).