Wiktionary
unprolific
a. Not prolific.
Usage examples of "unprolific".
It is popularly ascribed to the over-cultivation of the race, as plants and animals highly civilised--that is, greatly modified and bred to an artificial excellence by human agency--are certainly delicate, unprolific, and especially difficult to rear.
They were matched in and in, but in nearly every case these near marriages were unprolific and the inheritance generally passed through other wives.