c.1300, jangeln, "to talk excessively, chatter, talk idly," from Old French jangler "to chatter, gossip, bawl, argue noisily" (12c.), perhaps from Frankish *jangelon "to jeer" or some other Germanic source (cf. Middle Dutch jangelen "to whine"). Meaning "make harsh noise" is first recorded late 15c. Related: Jangled; jangling.