The word(s) "mocking" appears 6 time(s) in 6 verse(s) in Quran in Mohsin Khan translation.

(1) And when they meet those who believe, they say: "We believe," but when they are alone with their Shayatin (devils - polytheists, hypocrites), they say: "Truly, we are with you; verily, we were but mocking."

(2) And when you (Muhammad صلى الله عليه وسلم) see those who engage in a false conversation about Our Verses (of the Qur'an) by mocking at them, stay away from them till they turn to another topic. And if Shaitan (Satan) causes you to forget, then after the remembrance sit not you in the company of those people who are the Zalimun (polytheists and wrong-doers).

(3) Those who fear Allah, keep their duty to Him and avoid evil are not responsible for them (the disbelievers) in any case, but (their duty) is to remind them, that they may fear Allah (and refrain from mocking at the Qur'an). [The provision of this Verse was abrogated by the Verse 4:140].

(4) If you ask them (about this), they declare: "We were only talking idly and joking." Say: "Was it at Allah (عز وجل), and His Ayat (proofs, evidence, verses, lessons, signs, revelations) and His Messenger (صلى الله عليه وسلم) that you were mocking?"

(5) And as he was constructing the ship, whenever the chiefs of his people passed by him, they mocked at him. He said: "If you mock at us, so do we mock at you likewise for your mocking.

(6) Thus do We let it (polytheism and disbelief) enter the hearts of the Mujrimun [criminals, polytheists and pagans (because of their mocking at the Messengers)].