1. youth; youthfulness
    • あなたの若さの秘訣は何ですか
    • How have you managed to stay [keep yourself] so young?/What is the secret of your youth?
    • 彼は25歳の若さで死んだ
    • He died at the early age of twenty-five.
    • 彼は60歳だが40代の若さだ
    • At sixty, he still retains the vigor [energy] of a man in his forties.