Definify.com
Webster 1913 Edition
Cankered
Can′kered
,Adj.
 1. 
Affected with canker; 
as, a 
. cankered 
mouth2. 
Affected mentally or morally as with canker; sore, envenomed; malignant; fretful; ill-natured. 
“A cankered grandam’s will.” Shak.
 Webster 1828 Edition
Cankered
CANKERED
,pp.
  1.
  Corrupted.2.
  a.  Crabbed; uncivil.