falsen

verb

1. (transitive)To make false; falsify

   “In a modern time, we are living with a system of classes so intense, a society of such unnatural complication, that the whole action of our mind is hampered and falsened by it.”

   “That was one thing that I couldn't bear. Much better if he just hated queers. Without even trying to justify it. But he obviously had to, and that falsened his position.”

   “In fact, just as his master Chaucer did before him, Milburn “falsened” his material in some productive ways.”