The Oxford Thesaurus An A-Z Dictionary of Synonyms - excessive adj.

1) immoderate, inordinate, disproportionate, extravagant, exorbitant, superfluous, excess, undue, enormous, extreme, unreasonable, unwarranted, unjustifiable, outrageous, unconscionable: This job is making excessive demands on my time. 2) overdone, fulsome, cloying, nauseating, disgusting: I was sickened by her excessive sweetness.