Modifiers matching teenager:

• juvenile,
• temperamental,
• awkward,
• reckless,
• attention-seeking,
• youthful,
• cruel,
• lazy,
• whiny,
• weak,
• wilful,
• precocious,
• brave,
• frenetic,
• insightful,
• idiom-mangling,
• energetic,
• immature,
• snobby,
• diligent,
• resourceful,
• loyal,
• eager-to-impress,
• delinquent,
• manic,
• disobedient,
• inept,
• polite,
• adventurous,
• intimidating,
• disillusioned,
• proud,
• insecure,
• jealous,
• timid,
• bullying,
• gangly,
• well-mannered,
• nonconformist,
• resentful,
• foul-mouthed,
• rebellious,
• intelligent,
• spirited,
• disaffected,
• dishonest,
• nerdy,
• sensitive,
• hedonistic,
• moody,
• defiant,

Simple categories matching jealous:

• person,
• fool,
• clown,
• criminal,
• lover,
• pretender,
• genius,
• child,
• killer,
• psychopath,
• grump,
• villain,
• duck,
• aristocrat,
• snob,
• pianist,
• teenager,
• son,
• musician,
• tyrant,
• composer,