Synonyms for Majority (same or very similar meaning)
WordNet sense 1 (the age at which persons are considered competent to manage their own affairs):
legal age
WordNet sense 2 ((elections) more than half of the votes):
absolute majority
WordNet sense 3 (the property resulting from being or relating to the greater in number of two parts; the main part):
bulk
From the ODE community, based on WordNet
add/edit