The adjective “fecund” has a technical usage: describing a woman who is capable of becoming pregnant and giving birth. “Fecund” comes from the Latin “fecundus,” meaning “fertile” or “productive,” and while historically the adjective has been used in the technical sense, it has acquired a more metaphorical meaning related to inspiration. If an artist is particularly inspired by a subject and they produce several paintings, that would be a fecund period for them. Similarly, an author might break through writer’s block and find themselves in a fecund stretch of drafting their next work.