Main entry: vernal
Definition: of or characteristic of or occurring in spring
Usage: the vernal equinox
Antonyms: summery
Definition: belonging to or characteristic of or occurring in summer
Antonyms: autumnal
Definition: of or characteristic of or occurring in autumn
Definition: characteristic of or occurring in winter
Main entry: youthful, young, vernal
Definition: suggestive of youth; vigorous and fresh
Usage: he is young for his age
Definition: people who are old collectively
Antonyms: old
Definition: (used especially of persons) having lived for a relatively long time or attained a specific age
Antonyms: mature
Definition: having reached full natural growth or development
Antonyms: mature
Definition: characteristic of maturity