Excessive
Part of speech: adjective
Definition: Exceeding the usual bounds of something; extravagant; immoderate.
Example sentence: The excessive increase of anything causes a reaction in the opposite direction.
Overweening
Part of speech: noun
Definition: Conceit; arrogance.
Part of speech: adjective
Definition: Unduly confident; arrogant; presumptuous; conceited.Exaggerated, excessive.