list of positive adjectives words that beginning with Y Yare lively; eager; keen; agile; dexterous; ready; prepared. Yern brisk; active; quick; eager. Young fresh; vigorous; youthful; in the early part of life, growth, development, stage or state. Young-at-Heart having a youthful or fresh spirit not depended of one’s age; act in a way like younger person … [Read more...] about Positive Adjectives that start with Y