1 fraudulently alter or make false (a document, evidence, etc.).
2 misrepresent.
3 make wrong; pervert.
4 show to be false.
5 disappoint (a hope, fear, etc.).
Derivatives:
falsifiable adj. falsifiability n. falsification n.
Etymology: ME f. F falsifier or med.L falsificare f. L falsificus making false f. falsus false
Useful english dictionary. 2012.