Modifiers matching teenager:

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

Simple categories matching insecure:

• person,
• nerd,
• system,
• child,
• snob,
• fool,
• comedian,
• narcissist,
• autocrat,
• psychopath,
• student,
• princess,
• friend,
• physicist,
• director,
• actress,
• writer,
• duck,
• heroine,
• humorist,
• dictator,
• thug,
• son,
• musician,
• transport,
• actor,
• composer,
• clown,
• tyrant,
• bully,
• singer,
• pianist,
• president,
• network,
• medium,
• teenager,
• psychiatrist,
• criminal,
• father,
• politician,
• queen,