youthfulness

n [U].

Yorkshire pudding, you, you'd, you'll, you're, you've, you-all, young, young and old, youngish, youngster, your, yours, yourself, yourselves, youth, youth club, youth hostel, youthful, youthfully, yowl, yr, yrs, YTS, yucca, yuck, yucky, Yugoslavia, Yugoslavian, yule, yule-log, yum-yum, yummy, yuppie, z, Z, z, zanily, zaniness, zany, zap,