2 verses have
monstrous
in Edition Clear Qur'an by Talal Itani / An-Nisaa (The Women)

4:48God does not forgive association with Him, but He forgives anything less than that to whomever He wills. Whoever associates anything with God has devised a monstrous sin.

4:156And for their faithlessness, and their saying against Mary a monstrous slander.