Stock up on short words

"Cwm" is not a typo: Three-letter words you didn't know existed

Need a few tricks up your sleeve for playing Scrabble? It’s not always the long words that will impress the other players: Sometimes it’s the surprisingly short combination of letters that none of them knew. Have you ever heard of unassuming three-letter words like "cwm" or "zax"? Those aren’t typos! Let’s explore some of the most obscure –yet perfectly valid– three-letter words.

Before you ask: it’s pronounced "koom". If you run out of vowels in your Scrabble set, this might save you. It refers to a deep, steep-walled valley, often carved by glaciers.

The term comes from Welsh, where it simply means "valley." Many places in Wales proudly bear the name, such as Cwmbran, a town in South Wales, or Cwmtwrch, a village with a name that translates to "Valley of the Wild Boar."

A "zax" is a tool used for cutting or trimming roof slates with precision. The word shares linguistic roots with seax, an Old English word for a short sword or knife.

Plus, in Scrabble, the mighty "Z" (10 points!) paired with "A" (1 point) and "X" (8 points) makes this one of the highest-scoring three-letter words you can play!

No, it’s not a mythical sea creature. "Voe" refers to a small bay or narrow creek that extends inland from the sea. These sheltered inlets are particularly found in Scotland, where they provided safe harbor for fishermen and sailors for centuries.

Some of these sailors were Vikings who once ruled the territory, and who called these bays with the Old Norse word vágr (bay or inlet.)

If you ever see a rowdy, loudmouthed troublemaker being kicked out of a bar in Britain, you might hear someone call them a "yob."

Here’s the funny part: There’s no Old English etymology involved. It’s just "boy" spelled backwards (a bit of Cockney slang trickery).

A very specific noun, but a valid one. A "pyx" is the container used in churches to hold consecrated bread.

The term comes from Latin pyxis, meaning "small box," which in turn derives from the Greek pyxos, a type of boxwood tree. Those three letters combined would earn you at least 15 points!

Have you ever seen the interior of a rock lined with dazzling, beautiful crystals? You might have been looking at a vug.

It’s a small cavity inside a rock that often exposes these pockets of hidden treasures, like quartz, amethyst, or more exotic gems. The word vug comes from the Cornish language, where vooga meant "cave" or "hollow."

Sure, playing "OK" is useful, but have you tried "Oka"? It’s a type of cheese from Canada, and also a historical unit of weight used in Turkey.

The cheese is named after the village of Oka in Quebec, where Trappist monks started making it in the late 19th century.

Gox might sound like the name of some sci-fi character. But it’s just a short abbreviation to refer to "gaseous oxygen."

"O₂" is the more common way to represent it, but "gox" is sometimes used by those in scientific and industrial contexts.

To be fair, you could pluralize any two-letter word by adding an S. "Xis" (the plural of the 14th Greek letter Ξ ξ) is no exception.

Just so you know, "xi" is not the translation of our "X," as you might think. What we call an "X," the Greek would call a "chi."

"Ait" is mostly used in Britain to describe little landmasses that pop up in waterways, like those dotting the Thames.

The word (sometimes spelled eyot) comes from Old English iegoth, meaning "small island." Though it’s not common in everyday speech, you’ll still find it in place names and historical writings.

Before they fully mature, newts crawl on land: this is when we call them efts. These tiny, bright-colored amphibians can be found around damp forests, looking like pocket-sized dragons.

The word eft has been around for centuries, coming from Old English efeta, which evolved to ewt, and ultimately to newt.

The gnu (pronounced "new" or "guh-noo") is better known as the wildebeest, that sturdy African antelope famous for its dramatic migrations across the Serengeti.

The word gnu comes from the Khoisan languages of southern Africa and was first recorded by European explorers in the 18th century. The alternative name wildebeest is the Dutch word for "wild beast," of course.

"Nix" means to reject, cancel, or put an end to something. The word comes from the German nichts, meaning "nothing."

It entered American English in the 19th century, likely through German immigrants. Over time, it became a snappy, no-nonsense way to say "no."

An "ulu" is a traditional Inuit knife with a characteristic curved blade, perfect for chopping, skinning, or even cutting a child's hair (yes, really).

The name comes from the Inuktitut word ᐅᓗ (ulu), which roughly translates to "woman’s knife"

because it was traditionally used by Inuit women for household and hunting tasks.

Decoding

Being a "treasured guest" is not a compliment. This is the hidden meaning

Have you ever heard "Code Adam" while shopping for groceries at Walmart? Or maybe you’ve heard how "Dr. Firestone" was being paged during a routine hospital visit. They sound like harmless announcements. But behind these ordinary words are secret codes staff use to signal emergencies without causing panic. From hospitals and supermarkets to airports and Disney Parks, these phrases quietly warn employees that something is happening. You hope you never hear them, but if you do, it helps to know exactly what they mean.

We all love getting special attention at airports or hotel desks, but if you hear the clerk call you a "treasured guest," don’t feel so flattered. You may not be as VIP as one could think.

In the hospitality industry, "treasured guest" has become a humorous bit of industry folklore to describe someone causing trouble. Maybe a customer yelling at staff over expired coupons, demanding impossible accommodations, or throwing a full-blown tantrum at the front desk. Whatever it is, the phrase has become the staff’s secret way to warn co-workers without escalating the situation in front of the customers. Most guests don’t realize the meaning, but once you know it, you may start hearing it more often. We just hope it’s not about you.

Imagine you’re pushing a shopping cart through Walmart when suddenly the overhead speaker announces, "Code Adam." You can easily assume it’s some kind of employee meeting or cleanup request. But when you see them start locking the exits and moving around, you know something’s wrong.

This code was created in 1994 by Walmart in collaboration with the National Center for Missing & Exploited Children (NCMEC), in memory of the tragic case of 6-year-old Adam Walsh. Adam was abducted from a Sears department store in 1981 while shopping with his mother. His father, John Walsh, later became famous for hosting the TV program America’s Most Wanted and advocating for missing children. Even if Adam’s story ended in tragedy, Walmart created the emergency system in Adam’s memory, and other retailers soon adopted it nationwide, intending to have a quick response to missing or abducted children.

You’re sitting in a hospital waiting room during a routine check-up when you suddenly hear "Code Blue, Room 214." Most people immediately know it sounds serious, even if they are not entirely sure why.

The phrase "Code Blue" is used at hospitals to draw the necessary staff and equipment to perform a resuscitation. It was created in the early 1960s at Beathany Medical Center by Dr. Hughes Day. Before then, hospital resuscitations were often chaotic and poorly coordinated. In 1961, Dr. Day received a grant to build one of America’s first cardiac care centers, and he developed both the Code Blue alert system and the modern crash cart to improve survival rates during cardiac emergencies. Today, the system is used in hospitals across the country, sometimes with specialized versions like "Code Blue Pediatric" or "Code Blue Neonate."

Imagine visiting a loved one in the hospital when the intercom calmly announces, "Paging Dr. Firectone to the third floor." Your head surely goes, "Dr. Firestone’s probably having a busy day up there." He is, but it’s not what you think.

The phrase is actually a discreet fire alert used to warn staff about smoke, flames, or overheating equipment without frightening patients and visitors. Hospitals adopted these coded announcements after realizing that openly yelling "fire" over loudspeakers could create panic, especially among patients who aren’t able to move quickly. "Code Red" is an alternative used by many health centers today, but it also hints at the situation while keeping hallways calm.

You’re standing at a checkout counter when the cashier picks up the phone and quietly says, "I need a Code 10 authorization." If you think that’s just another way to get a supervisor’s approval or technical issue, think again. In reality, the cashier may suspect the credit card is stolen or fraudulent.

Code 10 was developed through a cooperative effort between major credit card companies like Visa and Mastercard, along with international standard organizations. As credit cards became more common in the 1960s and 1970s, stores needed a discreet way to alert banks about suspicious activity without directly accusing customers and potentially putting employees at danger. When a cashier requests a Code 10, the bank’s operator begins asking yes-or-no questions to assess the situation and guide the employee on what to do next.

You’ve probably experienced those long airport security lines. The wait is usually uneventful. But sometimes, you can hear "Code Bravo" over the speakers. Maybe it’s a delay, or maybe it’s an issue with luggage. Within seconds, people stop moving, the security line freezes, and exits may even close. It’s something bigger.

Code Bravo is the emergency phrase used by airport security and the Transportation Security Administration to signal a serious security threat, such as an unattended bag, a breach at a checkpoint, or someone slipping into a restricted area. The term comes from the international phonetic alphabet used in aviation and military communications, where "Bravo" represents the letter B. When this is called, security staff immediately lock down affected areas, stop screening lines, and search for the source of the threat. To passengers, it’s sudden and confusing, but to security, it’s a carefully rehearsed response.

You are heading back to your cabin on a cruise ship when the speakers announce, "Code Alpha, Deck 7." You may think Alpha is related to the captain, but that’s not the case. It means someone on board is suffering a medical emergency.

The phrase comes from the NATO phonetic alphabet, where "Alpha" represents the letter A. In maritime emergency jargon, it became shorthand for a Priority A medical situation requiring immediate response. Cruise lines such as Royal Caribbean and Disney Cruise Line commonly use the term, though some ships use variations like repeating "Alpha" three times. Once the code is announced, onboard medical teams rush toward the specified deck or cabin. If necessary, stretcher crews are mobilized, and in severe cases, the ship may even divert course toward the nearest port for emergency evacuation. Passengers are enjoying the views, but the staff is running to save a life.

Anyone who remembers the CB radio craze of the 1970s probably smiles when they hear "10-4." Movies, truckers, and radio fans turned those number codes into a part of American culture. So if you overhear "10-33" on a police scanner, you might assume it’s just another routine message. But it’s not as simple as it sounds.

The 10-code system was first created in 1937 by Illinois State Police communications director Charles Hopper and later standardized by the Association of Public Safety Communications Officials, better known as APCO. Officers needed short phrases they could understand clearly over crackling radio signals. The 10-33 code commonly means an officer needs emergency assistance. In some departments, it also signals radio silence so dispatchers can focus on the crisis unfolding in real time.

Disney World is amazing, the parks offer something for everyone, and there are things to see wherever you look. But that’s exactly the kind of place where a child can easily disappear into a sea of strollers, balloons, characters, and crowds. For that reason, Disney has developed the "Signal 70," which alerts cast members and security that a child has become separated from their family.

The number comes from older police and emergency radio systems, where "70" was commonly associated with missing persons. Disney adopted the phrase because it allows employees to communicate discreetly without frightening or alarming nearby guests. If a member finds the child, they gently -and magically- escort them to Baby Care Center, where they coordinate the reunion.

Cruises are great to relax, enjoying a good book under the sun with a nice drink by the side. Until you hear "Echo, echo, echo" on the speakers. If you do, something is happening somewhere else on the ship.

The code is used among cruise employees to signal that dangerous winds or a navigational hazard are affecting the ship. It comes from the international maritime phonetic alphabet, where "Echo" stands for the letter E. In maritime signalling, the letter traditionally means "I am altering my course to starboard." And, in time, the phrase became associated with urgent ship maneuvers and weather-related warnings. However urgent, the repetition of the word by three doesn’t represent life-threatening situations. It alerts the crew of a certain hazard to prepare while avoiding panic among passengers.