The extortion of money under threat of making public charges of misconduct or the like; blackmail.(noun)
The Century Dictionary (Public Domain)
Use "chantage" in a sentence
"The fact is that my old schoolfellow, Lambert, might well, and indeed with certainty, be said to belong to one of those disreputable gangs of petty scoundrels who form associations for the sake of what is now called chantage, an offence nowadays defined and punished by our legal code."
"That was a bit of 'chantage' that you did with Dauriat; he gave you a thousand crowns to let Nathan alone."
"I did my 'chantage' for Finot's benefit, and Finot put Braulard on the wrong scent; Braulard told the man of drugs that _you_ were demolishing"