lažirati

1. (of a match, elections) to rig; to fix
   Opozicija tvrdi da su izbori lažirani. — The opposition claims the elections were rigged.
   Uhapsili su igrače koji su lažirali utakmicu. — They arrested the players who fixed the match.
2. (of death, illness, data) to fake; to stage
   Lažirao je svoju smrt i pobegao u inostranstvo. — He faked his own death and fled abroad.
   Lažirao je bolest da ne bi išao u vojsku. — He faked an illness to avoid going into the army.

Lažirati is usually used of results, events and states (utakmica, izbori, smrt, bolest). For a signature or document the usual verb is falsifikovati (falsifikovati potpis).