cloud over

Từ điển WordNet v3.1 - WordNet Dictionary

verb

1. become covered with clouds (Freq. 1)
- The sky clouded over
• Syn:
overcloud, cloud up
• Hypernyms:
darken
• Verb Frames:
- Something ----s
- It is ----ing
2. become overcast
- the sky clouded over
• Hypernyms:
change state, turn
• Verb Frames:
- Something ----s