Infecund refers to something that is incapable of producing offspring or fruitless. Its antonyms are fecund and productive. Fecund describes something that is rich in resources and able to produce abundantly. It is the opposite of infecund, which denotes barren or incapable of producing. On the other hand, productive refers to something that produces good results or outputs. It is also the opposite of infecund, which means unfruitful or ineffective. Both fecund and productive can be used to describe plants, animals, and human beings, as well as ideas and businesses that generate a lot of profits or benefits.