Sailors slang

Learn the ropes: 10 common sayings that came straight from sailors

Life on ships was all about teamwork and facing the unknown. Sailors dealt with changing weather, rough waters, and threats that weren’t always easy to anticipate. Many phrases that still sound familiar today came out of that world, even though most of us don't use ropes or read the wind anymore. Even far from the ocean, these 10 expressions still describe everyday life.

Can you imagine what "true colors" meant in sailing slang? It was actually a direct reference to a ship’s flag. Back then, flags could show a ship’s country or empire, loyalty, or even surrender. But ships could also sail under false colors to deceive other ships and hide their real intentions. When those intentions were finally revealed, the ship showed its true colors.

That meaning is not far from the one we use today. Today, the expression is used when someone reveals their real feelings or intentions after keeping them hidden for some time.

We’ve all entered a new job or tried a new activity, and had to learn how the whole system works before taking the first steps. That is the moment you get to learn the ropes, before things start to flow naturally. And on a ship full of real ropes, sailors had to learn, one by one, which rope was for which function and where it belonged before starting to sail by themselves.

When the ship faced a dangerous or urgent situation at sea, everyone’s help was needed, and the call was simple: all hands on deck. In that phrase, "hands" meant the sailors or workers on board. It was a call for when the crew had to act quickly. The phrase keeps almost the same spirit these days. We use all hands on deck when a task is too big for one person, and everyone’s effort is required to get the job done.

Imagine standing on the shore and spotting a ship far out at sea, which isn’t close enough to arrive yet. That distant part of the sea was called the offing, so when a ship was in the offing, people knew it was on its way. The phrase made its way from ships to everyday life, and today, "in the offing" means something will happen soon, and you already see it coming.

When getting ready for difficult situations, we often say we’d better "batten down the hatches." Originally, the expression meant getting ready for rough weather. Sailors would close and secure the ship's hatch covers so water couldn’t get below deck. The word "batten" refers to strips used to fasten things down. Years had passed, and the meaning went from protecting a ship from bad weather to protecting yourself before any challenge.

Cannons were extremely heavy and mounted on wheeled carriages. If the heavy ropes or tackles securing them broke during a battle or a heavy storm, the cannon would become a "loose cannon," sliding and rolling violently across the gun deck, destroying everything and everyone in its path. That dangerous image stuck over the decades, and today, we use the phrase to refer to someone who is unpredictable or to a situation that is dangerously getting out of our control

In sailing, the sheets were the ropes or chains that controlled the sails, and when the sheets came loose, the sails could flap, and the boat would start to move in a messy, unsteady way. The comparison is easy to imagine: someone very drunk can stumble like a boat that can’t stay steady. Sailors already used that image for a person who was too drunk to walk straight, and to this day, there may be no better way to describe it.

Out at sea, "by_"_ meant sailing close to the wind, while "large" meant sailing with the wind coming more from behind or from the side. So, when a ship sailed well by and large, it was capable of handling different kinds of wind. Over the years, that idea became a way to express something in a broad sense; it is used when talking about something in general, describing the big picture without getting stuck in every small detail.

Currently, "taken aback" describes a shocking or unexpected situation, but back in the sailing days, it was all about the wind. It described the moment when the wind hit the sails from the wrong side and pushed back against the mast. Now, when people are taken aback, it's probably because they received unexpected news or were caught off guard, leaving them unsure how to react.

The phrase smooth sailing comes from the kind of trip every sailor wanted: calm water, good wind, and no major trouble ahead. When conditions were right, the ship could move forward easily. Today, the phrase works almost the same way, but outside the sea. People use it when situations become easier after a problem is fixed. A work project or a trip can become smooth sailing once the hardest part is over.

Letters with meaning

Think you know what "PIN" stands for? Let’s test that!

Image: Markus Winkler

You probably rattle off "PIN," "USB," or "Mrs." without hesitating, but do you actually know what those letters stand for? Some abbreviations come from Latin, some from long-lost measurements, and a few make absolutely no sense at first glance. So let’s dive into the interesting roots of 12 common abbreviations you’ve been using for years.

Image: Nick Hillier

Why "No." for "number" when there’s no "O" in the word? You can blame Latin on that one.

The abbreviation comes from numero, meaning "number," which was originally abbreviated as an "N" with a small "o" above it (Nº). That old symbol eventually morphed into the familiar No. we still use today.

Image: Graphic Node

The abbreviation "lb" actually comes from libra pondo, Latin for "a pound by weight." The pondo gave us the English word "pound," while the libra stuck around as "lb."

It’s also why the British pound symbol (£) looks like a fancy "L." How interesting is that?

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"Ounce" and "oz" don’t match up phonetically, but historically, they’re connected. The word comes from the Latin uncia, meaning one-twelfth of a Roman pound.

It passed through Italian as onza, which is how we ended up with the abbreviation oz. Now it makes a little more sense, don’t you think?

Image: Jon Tyson

Most of us know whether it’s morning or night without translating Latin, right? But there’s some history behind these time markers. A.M. stands for ante meridiem (before noon) and P.M. for post meridiem (after noon).

You’ve probably seen "post" in other words like "post-op" or "postwar"—now you know why it shows up in time too!

Image: Julian

"PIN" stands for "personal identification number"— so saying "PIN number" is technically redundant.

Scottish engineer James Goodfellow created the PIN system in 1966 when he patented an early cash machine. Now it’s second nature, and we don’t even think twice about typing it in.

Bonus fact: "ATM" stands for "automated teller machine," so saying "ATM machine" is also a redundancy.

Image: Brett Jordan

"CC" stands for "carbon copy," from the days when people used carbon paper to make duplicates of typed letters. You’d slip a sheet between two papers, type your note, and you had two copies.

The email version took off in the 1980s, and we’ve been CC-ing ever since.

"BCC"? That’s "blind carbon copy," meaning the recipient is hidden from others. How about that, huh?

Image: Lucian Alexe

"Universal Serial Bus" might sound like a fancy Greyhound line, but it’s actually the system that helps gadgets talk to each other.

In computer terms, a "bus" is a communication channel, like a digital highway. The USB was created in the mid-1990s to simplify connecting devices.

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You’ve probably seen "et al." on academic papers or research articles. It’s short for et alia, Latin for "and others."

Only the "al" is abbreviated, which is why it gets the period. The word alia is also the root of "alias," a name used by someone else. But you already knew that one, didn’t you?

Image: João Ferrão

CV stands for curriculum vitae, Latin for "course of life." It’s a fancier version of a résumé and is often used in academia or overseas job applications.

The phrase popped up in the early 1900s and adds a bit of sobriety to your work history. Who said job hunting couldn’t be sophisticated?

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"MO" stands for modus operandi, Latin for "method of operating." Originally, it described the signature behavior of criminals, but these days it’s more broadly used to mean someone’s usual way of doing things.

If your uncle always steals the last slice of pie, that’s just his MO. Sneaky, but predictable, you know.

Image: Andrey Matveev

The SIM in your phone stands for "Subscriber Identity Module." It’s what tells the network who you are and lets you make calls, send texts, and use data.

First rolled out in 1991, SIM cards act like your phone’s ID badge—without one, your phone’s just a fancy calculator.

Image: Thomas AE

"Mrs." looks like it should rhyme with "mars," but we say it "missus." That’s because it originally stood for "mistress." Don’t worry— not the scandalous kind, just the lady of the house.

Over time, mistress took on new meanings, but the "R" stayed behind in the abbreviation. Go figure.