Antonyms for the word "pro-rate" include "disproportionate," "unequal," "unbalanced," "disproportioned," and "unproportioned." These words suggest the absence of equitable distribution or fair allocation. For instance, something that is disproportionate implies that the distribution is unequal or heavily biased towards one party. Similarly, something that is unbalanced possesses uneven proportions, indicating the lack of parity. In contrast, when we use the term pro-rate, we imply fairness in terms of distribution or sharing. Therefore, the antonyms of pro-rate reflect lopsidedness, lack of impartiality, bias, and inequity. The words remind us to strive for fairness and balance in all areas of our lives.