adulescens

Etymology
From with a phonological change from 'o' to 'u' in the antepenultimate syllable.

Adjective

 * 1) young, youthful
 * 2) minor (of two boys)

Noun

 * 1) a youth, a youngster; a young man, a lad; a young lady, a young woman, a maiden likely between ages 14-21 older than a but younger than a

Declension
The genitive plural is usually adulēscentium; the alternative form adulēscentum is also attested, though rare.