[fal.si.fy] vb -fied ; -fy.ing [ME falsifien, fr. MF falsifier, fr. ML falsificare, fr. L falsus] vt (15c) 1: to prove or declare false
2: to make false: as a: to make false by mutilation or addition "the accounts were falsified to conceal a theft" b: to represent falsely: misrepresent
3: to prove unsound by experience ~ vi: to tell lies: lie -- fal.si.fi.abil.i.ty n -- fal.si.fi.able adj -- fal.si.fi.ca.tion n -- fal.si.fi.er n