young

adjective (younger /ˈjʌŋgə/, youngest /ˈjʌŋgɪst/)

• 1having lived or existed for only a short time:a young girl young tender mint leaves (as plural noun the young)the young are amazingly resilient
• not as old as the norm or as would be expected:more people were dying young
• [attributive] relating to or consisting of young people:young love the local Young Farmers' club
• immature or inexperienced:she’s very young for her age
• having the qualities associated with young people, such as enthusiasm and optimism:all those who are young at heart

• 2 (the Younger) used to denote the younger of two people of the same name:Pitt the Younger
• (younger) Scottish denoting the heir of a landed commoner:Hugh Magnus Macleod, younger of Macleod

noun

• offspring, especially of an animal before or soon after birth:many grebes carry their young on their backs