longstanding Synonyms

long-standing Antiguan ageing older age-old vintage traditional time-honored surviving senior prevailing unnew long-term longtime age-worn in for the long haul as old as the sea yearlong well-established time-consuming overaged long-established deep-rooted persistent permanent perennial durable continuing archaic antique antiquated antediluvian ancient aging aged accumulate enduring eternal past old-fashioned old long-lived longitudinal longer long lingering lasting former abiding