frowzy
Concise Oxford English Dictionary © 2008 Oxford University Press:
frowzy /ˈfraʊzi/ (also frowsy)
▶adjective (frowzier, frowziest) scruffy, dingy, and neglected in appearance.
– derivatives
frowziness noun.
frowziness noun.
– origin C17 (orig. dial.): of unknown origin.
'frowzy' also found in these Oxford entries:

