The Collaborative International Dictionary
                    Cankerous
                    
                        
                
                                                                    Cankerous \Can"ker*ous\, a.
   Affecting like a canker. ``Canrerous shackles.'' 
--Thomson.
Misdeem it not a cankerous change.       
--Wordsworth.
Wiktionary
                    cankerous
                    
                        
                
                                                                    a. 1 Infected with canker; ulcerous 2 Causing canker; ulcerating
WordNet
Usage examples of "cankerous".
But the lovely aromas in that enchanted air did at last seem to dispel, for a moment, the cankerous thing in his soul.