(an instance of) irreverent talk about God and sacred things

irreverence

of, like, a cynic

nonbelieving; doubtful

(an instance of) laughing at a person, treating an effort etc as valueless

insult, disrespect

showing or deserving derision

ridiculing

a comment used to make fun of a person

ridicule

of, using, expressing, irony

sarcastic

words or expressions intended to mean the opposite, used to hurt a person's feelings

mocking remark

(US = skeptical) in the habit of not believing, of questioning the truth of, claims, statements etc

disbelieving, leery

the feeling that a person or thing deserves no respect; to refuse to accept, believe, (something) because one has no respect or trust

contempt toward something

not complimentary

sarcastic