REVIVAL' (3 letters) The term 'SHOWING RENEWED VIGOR' can be summarized by two crossword solutions: 'RENASCENT' (9 letters) and 'REVIVAL' (3 letters). Both words refer to a process of renewal or restoration, often after a period of decline. 'RENASCENT' is derived from the Latin word 'renasci', meaning 'to be born again', while 'REVIVAL' is derived from the Latin word 'revivere', meaning 'to come back to life'. Both words imply a return to a previous state of vigor or energy.