Becloud
ahd-5
transitive verb.
To darken with or as if with clouds; obscure.
The Century Dictionary and Cyclopedia
To overcloud; obscure; dim.
the GNU version of the Collaborative International Dictionary of English
transitive verb.
To cause obscurity or dimness to; to dim; to cloud.
Wiktionary, Creative Commons Attribution/Share-Alike License
verb.
cause to become
obscure
or
muddled
verb.
cover or surround with clouds
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
verb.
make less visible or unclear