What Does Fecund Mean? The Word Amanda Thought Was a Fungus

Amanda hears the word of the week, has no idea what it is, and asks the obvious question: "Is that like fungus?" Pete, who has the definition right in front of him, decides she's onto something. "Fungus is fruitful." What does fecund mean? It means fertile and productive in abundance, whether the output is offspring, crops or ideas. Pete's version is "fruitful or fertile," straight from the Latin fecundus, and it's a good one. The fungus part is where things go sideways, though not in the direction you'd think.

What Does Fecund Mean, Exactly?

Fecund is an adjective meaning highly fertile or productive: able to produce offspring, growth, or ideas in large amounts.

It's pronounced either FEK-und or FEE-kund, and dictionaries accept both. Merriam-Webster gives two senses. The first is literal: fruitful in offspring or vegetation, as in a fecund breed of cattle. The second is figurative: intellectually productive or inventive, as in a fecund imagination. The noun is fecundity.

The Fungus Guess Is a False Friend

Amanda's guess is reasonable. Both words start with an F, both have a -un- in the middle, and both sound like something from a biology lab. Pete even backs her up on the meaning, since a mushroom patch after a week of rain is about as fecund as nature gets.

The two words aren't related, though. Fungus came into English in the 1520s from the Latin word for a mushroom, and that Latin word is tied to the Greek sphongos, "sponge." Some linguists think Greek and Latin both borrowed it from an older language that wasn't Indo-European at all. Fecund comes from somewhere much more personal.

It Started With Nursing

Pete gets the important part right: "Same root that gives us fetus." Fecundus goes back to an ancient Indo-European root, dhe(i)-, meaning "to suck" or "to suckle," which later picked up the related meanings "to produce" and "to yield."

The rest of that family is more surprising. The same root gives Latin fetus, "offspring," and femina, "woman," which roughly meant "she who nurses." It's where feminine comes from. It also gives felix, which meant "fruitful" before it came to mean "lucky" and "happy," and which shows up in English as felicity. So in Latin, happiness and a good harvest started out as the same idea.

The English word arrived in the early 1400s as fecond, borrowed from French. In the 1500s, writers who wanted it to look more Latin respelled it as fecund, and that's the version that stuck.

Your Mind Could Be Fecund

Pete's next point is the one that matters for anyone reading the word today: "Somewhere along the line, we started using it more broadly than just, like, biology and, like, having babies." He starts listing examples: "Your mind could be fecund." Amanda adds "a piece of land." Then Pete goes further: "The 80s could be fecund. The decade of the 80s, right? Anything can be."

He's right about how people use it now. You'll rarely hear a person called fecund outside of a nature documentary or a slightly awkward compliment (Pete tries one on Amanda, which goes about as well as you'd guess). In modern writing, the word mostly describes things that keep producing: a fecund period in an artist's career, or a fecund decade for music. Whether the 80s qualify is between you and your record collection.

Fecund With Stars, Unfecund Venus

Because this is a stargazing episode, Pete works the word in twice more. Halfway through, he gets to use it properly: "Do you know what is so cool about our galaxy? It is so fecund with stars ... a fertile melting pot of stars." Amanda's answer is "Little stars having baby stars, right?"

That's closer to the real thing than it sounds. Astronomers call the gas clouds where new stars form "stellar nurseries," and the Milky Way is still producing stars in them, so the nursing metaphor fits a galaxy almost as well as it fits a farm.

The second time is a joke. During fun facts, Pete explains that Venus is the hottest planet in the solar system, even though Mercury is closer to the sun, because its thick carbon dioxide atmosphere traps heat. The surface averages around 870°F, which is hot enough to melt lead. Amanda calls it uninhabitable. Pete calls it "unfocund." The opposite of fecund does exist. It's infecund, a real dictionary word that almost nobody uses. Pete's version is easier to say.

A Word for Too Much of a Good Thing

Most words for abundance are cheerful, like plentiful or bountiful. Fecund is a little earthier. It carries the old idea of something that feeds and grows, and you can still hear that underneath, whether the subject is a wheat field or a galaxy. That's probably why it works best for things that won't stop producing.

It also turns out to be the right word for an episode about a sky so crowded that the show's own fun fact puts the stars in the observable universe ahead of all the grains of sand on every beach on Earth.

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Episode 120 of Sorta Sophisticated, "Everything You See Tonight Already Happened," is Pete's crash course in stargazing, his newest hobby. Besides the word of the week, you'll hear Pete's five-night plan for learning the sky without buying a telescope, and his retelling of the fourth day of creation, when God was "very, very busy" putting the stars in.

Hear the full episode here 👇 Everything You See Tonight Already Happened (Episode 120)