overcloud > define
verb
- Become covered with clouds.
- usage: "The sky clouded over"
- synonyms: cloud over, cloud up
- Make obscure or unclear.
- usage: "The distinction was obscured"
by WordNet 3.0 © 2006 by Princeton University
(v.t.) To cover or overspread with clouds; to becloud; to overcast.
by Webster's Revised Unabridged Dictionary