Acronyms List: Famous and Popular Everyday Acronyms

A short acronyms list: ten that almost everyone uses

If you only learn a handful of short forms, start with these. They appear on signs, forms and messages across the country.

Some of these are said as a word and some letter by letter. You say "R S V P" and "A T M," but nobody spells out OK. For how each kind works, see what is an acronym.

Popular abbreviations at home, on labels and in stores

A second group lives on packaging, appliance tags and sale signs. They are short because space on a label is tight.

• SPF: sun protection factor, the number on sunscreen.
• HVAC: heating, ventilation and air conditioning, the system that heats and cools a building.
• BTU: British thermal unit, a measure of heat used on air conditioners and grills.
• PSI: pounds per square inch, the unit you see on tire gauges and air pumps.
• RPM: revolutions per minute, on a car dashboard or a record player.
• BOGO: buy one, get one, a store sale.
• OBO: or best offer, in a for sale listing.
• AED: automated external defibrillator, the heart device in a wall box at a gym or airport.
• GMO: genetically modified organism, on food labels.

Famous abbreviations from science, sports and history

These short forms turn up in classrooms, on game broadcasts and in history books.

CRISPR and NASCAR are among the cool acronyms that are said as one word, which helps them feel like ordinary nouns. Cool abbreviations like these are easier to remember than strings of letters you have to spell.

Funny acronyms and the myths people repeat

Some of the most shared acronyms are funny because the story behind them is wrong. These are worth knowing so you do not pass a myth along.

• SOS does not mean save our souls. The three letters were picked because their Morse code, three dots, three dashes, three dots, is easy to send and hard to miss.
• GOLF is not short for a phrase about who may play. The word is older than the joke.
• SWAG is often explained as stuff we all get, a backronym for free promotional items. The slang word came first.
• TGIF really does mean thank God it's Friday, a cheerful end of week phrase.
• TLC stands for tender loving care, often used about fixing up an old house.

Popular acronyms in slang keep growing too. DINK means dual income, no kids, and SAHM means stay at home mom, both common in online posts about family life.

Small Latin and French short forms

A few of the best abbreviations in English are borrowed from older languages, and they keep their periods in many styles.

• i.e.: id est, that is. It restates something more exactly.
• P.S.: postscript, a line added after the signature of a letter.
• AM and PM come from Latin for before and after midday.
• RSVP keeps its French words even on the most casual party card.

The mix up people make most is i.e. with e.g., which means for example. A quick test: i.e. narrows things down to the one thing you mean, and e.g. gives a sample from a longer list.

How to read an acronym you have not met before

1. Look at the setting first. PR in a news story about a company is public relations, but PR at a track meet is a personal record.
2. Check for capitals and periods. Lower case with periods, like i.e., often signals Latin.
3. Try saying it. Letters that blend into a sayable word, like NASCAR, are usually read that way.
4. Look for the full form nearby. News stories and reports usually spell it out once.
5. Ask if it could be a brand. Many letter names on stores and channels are listed in brand name acronyms.

If the letters belong to a computer, a phone or a website, try the tech acronyms section instead.

Cool acronyms for teams, clubs and names

The best acronyms share three things. They are short, they are easy to say as a word, and the full form actually describes the group. A club called the Students Organizing Local Events can go by SOLE, which reads cleanly. A long name whose letters spell nothing will just be read letter by letter and forgotten.

Before you print a team shirt, say the letters out loud, check that they do not spell something embarrassing, and look up whether another group already uses them. The acronym generator can help you test ideas, and the groups above show which letter patterns people remember best.