Language is constantly evolving as word meanings shift, new words emerge and others go out of style.

This fluidity is due to several factors. First, language changes along with our needs. As new technologies and experiences arise, we label them and create new words to describe them — like texting and Googling.

The creation of communication technologies like the Internet can even lead to entirely new sociolects — social dialects associated with certain groups — like lolspeak and leetspeak.

We also borrow words from other languages (sushi, kayak), combine them to create new words (motel, brunch) or shorten them to make new ones (phone, gym).

Language also evolves because no two people have the exact same language experience. Our lexicon can vary depending on our location, culture, occupation and education, and age can play a significant role as well.

How we lose words

The most widely used words in our daily language are the ones that have the most staying power, according to research by Harvard University and the University of Reading, and these are also the ones that evolve at the slowest rate.

The words that disappear from our vocabulary and become obsolete are simply those we no longer speak or write. In other words, if we don't use them, we lose them.

Unfortunately, this means that some truly inventive words have slipped from our minds and tongues and are rarely seen outside the pages of a dictionary.

Below, take a look at some wonderfully descriptive words that are now obsolete and see if you can work them into your daily speech. You’ll find that some are quite fun to say!

cat sunbathingApricity: noun. The warmth of the sun in winter

My cat enjoys napping by the window even in cold months because of the apricity.

Callipygian: adjective. Having shapely buttocks

Cicisbeo: noun. A married woman’s male companion or lover

Cockalorum: noun. A boastful person

Crapulous: adjective. Lack of restraint in eating or drinking, sick from excessive indulgence in liquor

My crapulous uncle is always a sight to behold on Thanksgiving.

girl eating ice cream coneDeliciate: verb. To enjoy oneself, to luxuriate, to indulge in feasting

After she finished her vegetables, she delicated in twice as many desserts.

Frigorific: adjective. Chilling, causing cold

The frigorific blast of wind left me chilled to the bone.

Fudgel: verb. Pretending to work

Our boss blocked access to Facebook out of suspicion we were fudgeling.

awestruck crowdGorgonize: verb. To have a paralyzing or mesmerizing effect

Her sudden appearance gorgonized the crowd, leaving them awestruck.

Jirble: verb. To pour carelessly

Ludibrious: adjective. Ridiculous

Quidnunc: noun. An inquisitive, gossipy person

You can't tell him anything personal because he's such a quidnunc.

foot sticking out of coversSlugabed: noun. Lazy person who stays in bed long after the usual time for rising

Snowbroth: noun. Newly melted snow

Younker: noun. A young person

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Photos [All CC by 2.0]: (sunbathing cat) Kenneth Peters/flickr, (ice cream) Michael Bentley/flickr, (awestruck crowd) Boris SV/flickr, (sleeping in) Brandon Atkinson/flickr

Laura Moss writes about a variety of topics with a focus on animals, science, language and culture. But she mostly writes about cats.

15 obsolete words we should still be using
Over time, some words fall into disuse, but that doesn't mean they aren't valuable.