The antonyms for the word "payed for" are receive, get, earn, and gain. These words denote acquiring something without having to pay for it. For example, if you receive a gift or prize, you do not have to pay for it. Similarly, if you get something as a reward or recognition, you do not have to pay for it. When you earn something, you receive it as a result of your hard work or achievement. Finally, when you gain something, you acquire it through your own efforts or through a stroke of luck. In contrast, paying for something always involves giving something up in exchange, usually money.