untruth
2 occurrences across the corpus
OT Pseudepigrapha
2 Enoch 46:3
Or if one man make himself appear good to another by deceit of tongue, but have evil in his heart, then will not the other understand the treachery of his heart, and himself be condemned, since his untruth was plain to all?
2 Enoch 63:4
Every proud and magniloquent man is hateful to the Lord, and every false speech, clothed in untruth; it will be cut with the blade of the sword of death, and thrown into the fire, and shall burn for all time.'