Looking for a word that describes someone who has a subtle intention to ridicule the other person by questioning everything they say? They act slightly hostile and hypersensitive and make expressions in response to what is being said as if to try and make the other person's question seem silly or invalid.
dismissive (or one of the synonyms given below)
feeling or showing that something is unworthy of consideration. ...
synonyms: contemptuous, disdainful, scornful, sneering, snide, scathing, disparaging, negative, unenthusiastic, offhand, perfunctory; More informal - sniffy, snotty