old-timer Antonyms

army of children young woman youth yearling upstart undergraduate tyro tiro tenderfoot tacker suckling stranger starter rooky recruit proselyte probationer spring chicken young person fledgling new entrant fresh from the oven new person billy lid young child new member new recruit young blood Johnny-come-lately noob first-timer buckwheater babe in arms inductee rookie newbie postulant pledgee plebe dabbler cub colt child catechumen candidate calf cadet beginner baby babe