What is another word for untruenesses?
Pronunciation: [ʌntɹˈuːnəsɪz] (IPA) 
The word "untruenesses" is a bit uncommon and may not have many synonyms. However, some possible alternatives include falsehoods, deceit, lies, dishonesty, insincerity, and pretense. Each of these words describes an act or quality that is opposite to truthfulness or honesty. Falsehoods, lies, and deceit are intentional actions of misleading others, while insincerity and pretense may refer to a lack of authenticity or genuineness in one's actions or words. Despite their differences, all these words convey a sense of mistrust and may indicate that someone is not truthful or straightforward in their intentions.
