The word(s) "liar" appears 53 time(s) in 49 verse(s) in Quran in Muhammad Habib Shakir translation.

(41) The means of access to the heavens, then reach the god of Musa, and I surely think him to be a liar. And thus the evil of his deed was made fairseeming to Firon, and he was turned away from the way; and the struggle of Firon was not (to end) in aught but destruction.

(42) Woe to every sinful liar,

(43) Cursed be the liars,

(44) Has the reminder been made to light upon him from among us? Nay! he is an insolent liar!

(45) Tomorrow shall they know who is the liar, the insolent one.

(46) On the day that Allah will raise them up all, then they will swear to Him as they swear to you, and they think that they have something; now surely they are the liars.

(47) Have you not seen those who have become hypocrites? They say to those of their brethren who disbelieve from among the followers of the Book: If you are driven forth, we shall certainly go forth with you, and we will never obey any one concerning you, and if you are fought against, we will certainly help you, and Allah bears witness that they are most surely liars.

(48) When the hypocrites come to you, they say: We bear witness that you are most surely Allah's Apostle; and Allah knows that you are most surely His Apostle, and Allah bears witness that the hypocrites are surely liars.

(49) But they called him a liar and slaughtered her, therefore their Lord crushed them for their sin and levelled them (with the ground).