Language Moves Whether We Like It or Not

English is not a museum exhibit. It is a living system, and words shift meaning constantly. Some words broaden, some narrow, some flip entirely from positive to negative or vice versa. Here are five common words whose histories reveal just how dramatic these shifts can be.

1. Decimate

Modern meaning: To destroy a large portion of something. "The hurricane decimated the coastline."

Original meaning: To kill one in every ten. The word comes from Latin decimare, a Roman military punishment in which every tenth soldier in a mutinous unit was executed by his own comrades. The practice was rare but terrifying enough to become legendary.

Purists sometimes insist "decimate" should only mean a 10% loss. But the word left that precise meaning behind centuries ago. In modern English, it means severe destruction, and fighting that usage is a losing battle.

2. Nice

Modern meaning: Pleasant, kind, agreeable. "She's a nice person."

Original meaning: Foolish or ignorant. "Nice" comes from Latin nescius ("ignorant"), and when it entered English in the 13th century, it meant stupid or senseless. Over the following centuries, it cycled through meanings including "wanton," "strange," "coy," "precise," and "delicate" before settling on its current bland positivity by the 18th century.

No English word has wandered further from its origin. The journey from "foolish" to "pleasant" took about 500 years.

3. Silly

Modern meaning: Lacking seriousness or good sense. "That's a silly idea."

Original meaning: Blessed, happy, or innocent. The Old English saelig (related to the German selig) meant "blessed" or "fortunate." A "silly" person was originally a holy or innocent one. Over time, innocence became associated with naivety, naivety with simplicity, and simplicity with foolishness. By the 16th century, the word had completed its descent from sacred to ridiculous.

4. Awful

Modern meaning: Extremely bad or unpleasant. "The movie was awful."

Original meaning: Worthy of awe; inspiring reverence. An "awful" sight once meant a sight so magnificent it filled you with wonder. "Awful" and "awesome" once meant the same thing. But "awful" drifted toward the negative sense of awe, dread rather than wonder, and eventually lost its grandeur entirely. "Awesome" held onto the positive connotation, at least until it was diluted by casual overuse.

5. Egregious

Modern meaning: Outstandingly bad; shockingly terrible. "An egregious error."

Original meaning: Remarkably good; standing out from the flock. From Latin egregius ("illustrious"), literally "standing out from the herd" (ex + grex, "flock"). In the 16th century, "egregious" was a compliment, an egregious scholar was an exceptionally brilliant one. The shift to its negative meaning may have started with ironic usage, where calling a fool "egregious" was sarcastic. Eventually the sarcasm became the standard meaning.

What This Tells Us

Words are not fixed containers of meaning. They are shaped by the people who use them, generation after generation. When someone insists a word can only mean what it meant 200 years ago, they are fighting the fundamental nature of language itself.