c.1300, from Old French estrangler, from Latin strangulare "to choke, stifle, check, constrain," from Greek strangalan "choke, twist," from strangale "a halter, cord, lace," related to strangos "twisted," from PIE root *strenk- "tight, narrow; pull tight, twist" (see strain (v.)). Related: Strangled; strangling.