Etymology

From Latin augustus ‎(“month of August”), from the agnomen Augustus ‎(“venerable”) of Gaius Julius Caesar Augustus, possibly from either Old Latin *augos, increase, from Proto-Indo-European base *aug-, to increase; or Latin avis ‎(“bird”), referring to divination by observing bird flights, singing, feeding or entrails, from Proto-Indo-European *awi-, bird; + Latin garrire ‎(“to chatter”), from Proto-Indo-European base *gar-/*ger-, to cry, of imitative origin