The word(s) "trifling" appears 2 time(s) in 2 verse(s) in Quran in Abdullah Yusuf Ali translation.

(1) They will do you no harm, barring a trifling annoyance; if they come out to fight you, they will show you their backs, and no help shall they get.

(2) No just estimate of Allah do they make when they say: "Nothing doth Allah send down to man (by way of revelation)" Say: "Who then sent down the Book which Moses brought?- a light and guidance to man: But ye make it into (separate) sheets for show, while ye conceal much (of its contents): therein were ye taught that which ye knew not- neither ye nor your fathers." Say: "Allah (sent it down)": Then leave them to plunge in vain discourse and trifling.