Why Is There an Apostrophe?
The apostrophe serves as a reminder that letters or words have been omitted.
In English, apostrophes have two primary jobs:
- Showing possession (the teacher’s book)
- Indicating omitted letters in contractions (don’t, can’t, it’s)
In o’clock, the apostrophe tells us that part of the original phrase—of the—has been shortened.
Although most speakers no longer think about those missing words, the apostrophe preserves a small piece of the phrase’s history.
Other Words That Use the Same Pattern
O’clock isn’t the only English word formed this way.
Several older expressions still preserve this historical contraction.
Jack-o’-Lantern
Originally, Jack-o’-lantern meant Jack of the lantern.
Long before it referred to carved pumpkins, the expression described a man carrying a lantern or mysterious lights seen at night.
Today, the Halloween pumpkin is the meaning almost everyone recognizes.
Will-o’-the-Wisp
Another classic example is will-o’-the-wisp, which comes from Will of the Wisp.
The name originally referred to mysterious lights sometimes seen over marshes and bogs, giving rise to legends about ghostly figures leading travelers astray.
Ne’er-Do-Well
The word ne’er is simply an old contraction of never.
A ne’er-do-well is literally someone who never does well, meaning an unreliable or irresponsible person.
Why English Has So Many Oddities
English has evolved over centuries by borrowing words from Latin, French, Norse, Germanic languages, and many others. As pronunciation changed, spelling often stayed the same, leaving behind many of the inconsistencies we still encounter today.
That’s why English contains:
- Silent letters
- Multiple pronunciations for the same spelling
- Words with identical spellings but different meanings
- Countless contractions that preserve older forms of the language
These quirks may seem confusing, but they’re also what make English such a fascinating language to explore.
The Bottom Line
The next time someone asks you the time and you reply, “It’s six o’clock,” you’ll know you’re using a phrase that’s more than 600 years old.
The little “O'” isn’t just a decorative apostrophe—it represents the words “of the,” a reminder of a time when people distinguished the hour shown by the clock from other methods of keeping time.
It’s a small detail most of us never notice, but it offers a glimpse into the remarkable way language evolves. Everyday words often carry centuries of history, quietly preserving the past every time we speak.
