Ant. Age, period, decade, century, generation; insignificance, unimportance, triviality.
Monarch. Ruler, sovereign; king, prince, emperor, queen.
Ant. Subject, peer, plebes.
Money. Coin, cash, currency, gold, funds, property, specie, silver, bills, bullion, notes, capital.
Monopoly. Exclusiveness, possession, privilege, appropriation, engrossment, preëmption.
Ant. Community, partnership, competition, free trade; participation, sharing; communism; socialism.
Monotonous. Unvarying, uniform, wearisome, dull, tedious, same, unison, humdrum, undiversified; similar, like.
Ant. Varied, changed, diversified; harmonic; lively; divergent, variant.
Monster. Prodigy, enormity, marvel, portent; monstrosity, wonder; demon, fiend, dragon, sphinx, colossus, leviathan; ogre.
Ant. Pigmy, dwarf, elf; angel, beauty, cherub.