Lewis & Short

1. falso, āvi, ātum, āre, v. a. [falsus], to falsify (late Lat.): pondera aut mensuras, Dig. 48, 10, 32 fin.: scripturas divinas, Ambros. de Fide, 2, 15, 135: liber falsatus ab haereticis, Hier. in Ruf. 2, 5 al.
Hence, falsātus, a, um, P. a., falsified, Sulp. Sev. de Virt. Monach. 1, 6.