youthfulness, prime of manhood (supposed to be the state from sixteen to thirty-two), prime of life, youth

to produce aspiration and strength of youth (medicine)

evasive youth

youth to decline

be in (one's) prime, be successful or at one's best

prime of youth

pledged to youthfulness

intoxicated with youth

the prime or bloom of youth

state of youthfulness

the period of youth, puberty

after youth

return of youth

to talk like a youth in old age is like talking in a dream

water bloom, deep green scum on stagnant water, thick layer of algae covering the surface of water