casual – adj. designed for or permitting ordinary dress, behavior, etc. : not formal

actual – adj. real and not merely possible or imagined : existing in fact

formal – adj. suitable for serious or official speech and writing

informal – adj. having a friendly and relaxed quality

annoying – adj. to disturb or irritate especially by repeated acts

wee hours – n. the very early hours after midnight

get even – v. to get revenge