to cause (a person, achievement etc) to seem unimportant or of small value

detract

to cause (oneself, a person) to become cheap

diminish worth

to you say that (a person) is, or has done wrong or that (something) is wrong or unfit for use

blame, convict

to give a judgment of the quality of (something)

disapprove, judge as bad

to show that (something generally believed) is not true (especially with sarcasm)

disprove, ridicule

to speak against (something) especially with sarcasm

criticize, blame

to attack the good reputation (of a person)

inflict libel or slander

to cause (a person) to be less moral or less deserving of respect

shame, humiliate

to lower (oneself, also a person) in dignity, reputation

humble, humiliate

to weaken the cottage, confidence, self-discipline etc of (e.g. an army)

depress, unnerve

to laugh at (a person, behaviour etc) and show contempt

make fun of; insult

to say that one does not own for have a connection with (a person, thing, action etc)

deny

(to try) to take away the courage or confidence of (a person)

dishearten, dispirit

the loss of credit or good reputation

blame, detract from

cause (a person) to lose courage or confidence

depress, ruin one's hopes

to accuse (a person) of a serious crime, e.g. against a profession or the State

denounce, censure

to reduce (something) to the smallest amount or degree

make smaller; underrate

to make a protest; argue in protest

argue against

to use abusive language about (a person, thing)

scold

to blame (a person) with angry words

find fault with

to show one's dislike by using a wrinkled nose and an insincere smile (and perhaps despising words)

mock, condemn

(to make) a short, unpleasant laugh (especially rude or to show lack of respect)

sneer

to have too low an estimate or opinion of (a person, ability etc)

minimize; rate too low

to say evil things about (a person)

criticize very harshly