“At ev'ry word a reputation dies.”
Pope compresses the destructive speed of fashionable gossip into a comic line about reputations being damaged in ordinary conversation.
Source details
The Rape of the Lock, Canto III, line 16 in the 1714 second edition. ‘At ev’ry Word a Reputation dies’ is already present in that edition and remains dated 1714; the line occurs in a satirical description of fashionable social talk rather than as literal reportage.