The word "multiplied" means to increase or enlarge the quantity, size, or number of something. Its antonyms therefore refer to reducing or decreasing the amount, size or number of what has been multiplied. Some antonyms for "multiplied" include divided, subtracted, decreased, reduced, diminished, and declined. For instance, "divided" means to separate into parts or groups, while "subtracted" refers to taking away or removing something from the whole. "Reduced" and "diminished" both imply a decrease or shrinking of size, quantity, or extent. "Declined" on the other hand, implies a systematic or gradual decrease in value or amount over a period of time.