英语词源字典 - 在线词源网站

juvenal [juvenal 词源字典]: 1580s (n.), 1630s (adj.), from Latin iuvenalis "of or belonging to youth," from iuvenis "a young person" (see young). The Roman satirist is Decimius Junius Juvenalis.[juvenal etymology, juvenal origin, 英语词源]
juvenescence (n.): 1800; see juvenescent + -ence.
juvenescent (adj.): 1821, from Latin iuvenescentem (nominative iuvenescens), present participle of iuvenescere "to grow into youth," from iuvenis "young" (see young).
juvenile (adj.): 1620s, from Latin iuvenilis "of or belonging to youth," from iuvenis "young person," originally "young" (compare French jeune; see young). Juvenile delinquency first recorded 1816; Juvenile delinquent the following year.
juvenilia (n.): "works of a person's youth," 1620s, from Latin iuvenilia, neuter plural of iuvenilis (see juvenile).
juvenility (n.): 1620s, from Latin iuvenilitas "youth," from iuvenilis (see juvenile).
Juventus: Roman god of youth, personification of iuventas "youth," from iuvenis "a young person" (see young).
rejuvenate (v.): 1807, irregular formation from re- "again" + Latin juvenis (see young (adj.)) + -ate (2). Related: Rejuvenated; rejuvenating.
rejuvenation (n.): 1834, noun of action from rejuvenate.
rejuvenescence (n.): "renewal of youth," 1630s, from Latin rejuvenescere, from re- "again" (see re-) + juvenescere "become young," from juvenis "young" (see young (adj.)) + -ence.
rejuvenescent (adj.): 1763, from Medieval Latin rejuvenescentem (nominative rejuvenescens), present participle of rejuvenescere (see rejuvenescence).
rejuvenesce: "To become young again. Formerly also specifically of a living cell: †to undergo a reversal of senescence ( obsolete rare )", Mid 19th cent.; earliest use found in Family Magazine. From post-classical Latin rejuvenescere to become young again from classical Latin re- + iuvenis young + -ēscere.