All 5 Uses

discredit
in
Alias Grace
(Auto-generated)

Is not this Neurohypnotism simply the reanimated corpse of Mesmer's discredited Animal Magnetism?†
Chpt 4 *

discredited = damaged the reputation of
Reverend Verringer has made it plain that the enemies of the Reformers will use any means, however base, to discredit their opponents, and in case of a scandal he'd be given his discharge in short order.†
Chpt 9

discredit = damage the reputation of
He feels he's sneaking away after some discreditable peepshow.†
Chpt 12

discreditable = tending to damage the reputation of

standard suffix: The suffix "-able" means able to be. This is the same pattern you see in words like breakable, understandable, and comfortable.
He may after all be able to work up something; something that will not entirely discredit him.†
Chpt 13

discredit = damage the reputation of
This rubbishy "Neuro-hypnotism," however beribboned with new terminologies, is only Mesmerism, or Animal Magnetism, re-writ; and that sickly nonsense was discredited long ago, as being merely a solemn-sounding blind, behind which men of questionable antecedents and salacious natures might obtain power over young women of the same, asking them impertinent and offensive questions and ordering them to perform immodest acts, without the latter appearing to consent to it.†
Chpt 14

discredited = damaged the reputation of

Definitions:

(1) (discredit)
damage the reputation of -- often causing distrust of or disbelief in
(2) (meaning too rare to warrant focus)