Cankered

morally corrupt.
bad-tempered.

destroyed or having portions destroyed by the feeding of a cankerworm.
having a cankerous part; infected with a canker.

ulcerated.
a gangrenous or ulcerous sore, especially in the mouth.
a disease affecting horses’ feet, usually the soles, characterized by a foul-smelling exudate.
a defined area of diseased tissue, especially in woody stems.
something that corrodes, corrupts, destroys, or irritates.
Also called canker rose. British Dialect, dog rose.
to infect with canker.
to corrupt; destroy slowly.
to become infected with or as if with canker.
Historical Examples

The Life of John Taylor B. H. Roberts
Japhet in Search of a Father Frederick Marryat
Mrs. Hale’s Receipts for the Million Sarah Josepha Hale
The Third Window Anne Douglas Sedgwick
Phantom Fortune, A Novel M. E. Braddon
Oliver Twist, Illustrated Charles Dickens
Unicorns James Huneker
The Trial of Theodore Parker Theodore Parker
The Life of Mrs. Robert Louis Stevenson Nellie van De Grift Sanchez
On the Portraits of English Authors on Gardening, Samuel Felton

noun
an ulceration, esp of the lips or lining of the oral cavity
(vet science)

a disease of horses in which the horn of the hoofs becomes soft and spongy
an inflammation of the lining of the external ear, esp in dogs and cats, resulting in a discharge and sometimes ulceration
ulceration or abscess of the mouth, eyelids, ears, or cloaca of birds

an open wound in the stem of a tree or shrub, caused by injury or parasites
something evil that spreads and corrupts
verb
to infect or become infected with or as if with canker
n.