too much

excessive, extreme

behaving with too much self-importance (especially by speaking with a false, aristocratic accent)

affected, pretentious

an ability to use more nuclear bombs than would be necessary; exaggerated behaviour

extravagant; beyond normal limits

claiming (without justification) great ability, qualities or importance

snobbish, conceited

expensive

extravagant; beyond normal limits

(the) most extreme; greatest possible

extreme, maximum