Synonyms for Excessive (same or very similar meaning)
WordNet sense 1 (unrestrained, especially with regard to feelings):
extravagant, exuberant, overweeningWordNet sense 2 (not subject to restraint):
unrestrainedWordNet sense 3 (beyond normal limits):
inordinate, undue, unreasonableWordNet sense 4 (not within reasonable limits):
immoderateFrom the ODE community, based on WordNetadd/edit