Definition of youthfulness noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//ˈjuːθflnəs//
    ; NAmE NAmE//ˈjuːθflnəs//
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  1. 1the fact of being young the youthfulness of much of the population in nearly all these countries
  2. 2the quality of looking or acting like somebody who is young or younger than you are She graces the stage with elegance and youthfulness.