How to Say "to counterfeit" in Spanish
The Spanish word for “to counterfeit” is “falsificar” — B1 level.

Examples
Intentaron falsificar la firma del director en el contrato.
They tried to forge the director's signature on the contract.
Es un delito federal falsificar billetes de banco.
It is a federal crime to counterfeit bank notes.
El científico admitió haber falsificado los resultados del experimento.
The scientist admitted to having falsified the experiment results.
The 'C' to 'QU' Spelling Tweak
In the past tense (Preterite) 'yo' form and in all 'special wish' (Subjunctive) forms, the 'c' changes to 'qu' to keep the hard 'k' sound. Without this, it would sound like an 's'!
Direct Action
This verb is used directly with the object being forged; you don't need a preposition like 'of' or 'with' between the verb and the noun.
Using 'falsar'
Mistake: “Yo quiero falsar este documento.”
Correction: Yo quiero falsificar este documento. 'Falsar' isn't a common word; always use 'falsificar' for forging or faking.
Spelling the Past Tense wrong
Mistake: “Yo falsificé la firma.”
Correction: Yo falsifiqué la firma. Remember the 'qu' is needed to keep the pronunciation consistent.
Related Translations
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