Wiktionary
nonfertile
a. Not fertile.
Usage examples of "nonfertile".
Wait until the next time that you are having sex for fun, at a nonfertile time of the ovulatory cycle, while enjoying the security of a lasting monogamous relationship.
Past a certain stage restrictive processes set in: male libido is reduced or diverted into nonfertile channels, female ovulation is irregularized and sometimes fails completely.