первенецprimum genitus, primogenitus,
болтовняgarritus [us, m]
завядший(e)marcidus [a, um]
probus [a, um] ; probatus [a, um] ; vetus [e]ris (imperator); expertus [a, um] ; experimento probatus [a, um] / exploratus [a, um] ; experientia cognitus [a, um] ;