7 letters · 16 points in Scrabble
verb make false by mutilation or addition; as of a message or story
verb tamper, with the purpose of deception
verb prove false
originFrom French falsifier, from Late Latin falsificāre (“make false, corrupt, counterfeit, falsify”), from Latin falsificus, from falsus (“false”), corresponding to false + -ify.
Etymology from Wiktionary, CC BY-SA 3.0