Chagrin (n)

Mortification, embarrassment

Insolent (adj)

Rude

Facetious (adj)

Playful teasing

Esoteric (adj)

Mysterious

Gregarious (adj)

Talkative

Modicum (n)

A small amount

Perfunctory (adj)

Unthinking, automatic

Cognizant (adj)

Aware

Transgression (n)

Wrongdoing

Flippant (adj)

Offhand, dismissive, frivolous, superficial