Think back to when you were growing up, sitting around the dinner table with the family, and having a conversation with your parents. For many of us, those days gone by evoke pleasant memories — and also provide a fascinating look at popular words and phrases of yesteryear. Though a few have stood the test of time, most of those once-common words have since been largely forgotten. Today’s English may feel like a wildly different language from the dialect our parents or grandparents spoke. Here are seven words and phrases that were popular with past generations, though you’re not likely to hear them anymore.

Hot Diggity Dog

If your folks grew up in the mid-20th century, they may have busted out the phrase “hot diggity dog!” to express excitement. This saying was first printed in a 1921 edition of the St. Joseph Gazette in Missouri. It’s derived from earlier and similar phrases used to express approval, such as “hot dog!” and “hot-ziggety!” The expression “hot diggity dog!” remained popular into the late 1970s, even appearing in Oscar Mayer Wiener commercials from that time. Today, the phrase is rarely heard.

Hootenanny

The term “hootenanny” caught on in the 1940s to refer to “a gathering at which folk singers entertain often with the audience joining in.” The origins are unknown, and it’s entirely possible that it’s simply a nonsensical creation. But your parents likely used it well into the 1960s, when it served as the title of a musical variety TV show. Much like folk music itself, however, this word has given way to more modern slang for musical gatherings. Take “rager,” for instance, which involves more intense dance music than what your folks probably listened to back in the day.

Dungarees

Jeans have never gone out of style, but if your parents wore a pair of heavy denim pants prior to the 1950s, they probably called them dungarees. This term came from the Hindi word dungri, meaning “coarse calico.” It was widely used among English speakers in the first half of the 20th century, but in the mid-1950s and early ’60s, the newly coined term “jeans” emerged to refer to blue denim pants. Baby boomers adopted this word to replace “dungarees” (and other forgotten terms such as “waist overalls”) as the more widely accepted standard.

Drop a Dime

The phrase “drop a dime” is antiquated for multiple reasons — not the least of which is the fact that it’s hard to imagine anything costing a dime anymore. The expression comes from the former cost of a payphone, which is widely considered to be a relic of the past. But both 10-cent price tags and payphones were common in our parents’ generation, and so was this phrase, which means “to alert the police about another person’s wrongdoing.” It was coined in the 1960s when people could use a public phone to anonymously report wrongdoing to the cops.

Ameche

While Don Ameche isn’t a household name among modern film buffs, the talented actor was well known during the mid-20th century. He famously starred in the title role of the 1939 film The Story of Alexander Graham Bell. It was Bell, of course, who invented the telephone, and after the film’s release, “ameche” became familiar slang for the telephone.

Passion Pit

You might not want this image in your head, but when your parents were courting each other, they may have gone on a date to the passion pit. This dated 1930s slang refers to drive-in movie theaters, which were common spots for teenagers to get away from their parents and canoodle in their cars. “Canoodle” is yet another term you don’t hear that often today. It refers to the “amorous embracing” your folks may have done at the passion pit.

Copacetic

The origins of the term “copacetic” are a mystery, with one theory suggesting that it originated as African American slang in the 1880s. There’s evidence of this term in print as early as 1919, meaning “very satisfactory.” If your parents were music or movie fans, they likely knew and used this term, as it was popularized by the tap dancing legend Bill “Bojangles” Robinson, who starred alongside Shirley Temple in several 1930s films. The Grateful Dead later used it in the lyrics of the 1987 track “West L.A. Fadeaway,” though by that point the word had already begun to fade in popularity.

Certain English terms lack a perfect translation in other tongues. You may come across words or phrases in another language that have similar meanings, but they won’t be quite identical. While it’s an uncommon phenomenon, to be sure, it may surprise you to learn that some familiar English words are unique to the language. Here’s a look at a few terms that fall into this fascinating category.

Awkward

When speaking another language, you may find it awkward to come up with an identical substitution for the word “awkward.” Derived from the Middle English “awk” — a prefix meaning “backhanded” — coupled with the adverbial suffix “-weard,” it’s been used by English speakers to describe clumsiness since the 1520s and a sense of social embarrassment since the 1710s.

But many other languages lack a precise translation. There’s the Spanish torpe, meaning “clumsy,” but that word omits the sensation of social tension so typically associated with awkwardness. In French, you could say chelou for “weird,” or gênant for “embarrassing,” but those fail to individually capture the all-encompassing feeling of being awkward. In Japanese you may use gikochinai for clumsiness, terekusai for embarrassing situations, and heta for ineptitude, but those terms also fall short of being direct translations.

Serendipity

The term “serendipity” was coined in a 1754 letter by British politician Horace Walpole to American politician Horace Mann, based on the Persian fairy tale “The Three Princes of Serendip.” Walpole said the princes “were always making discoveries, by accidents and sagacity, of things they were not in quest of.” This word, meaning “the ability to find valuable or agreeable things not sought for,” is slightly different from “fate” or “luck,” which do have exact translations in foreign tongues.

In French you could say ça tombe à pic, an idiom that translates to “that comes at the perfect time.” Hindi speakers may say sukhad sanyog, meaning “a pleasant coincidence.” But those are just two of the many examples of non-English words that fail to capture the detailed nuances of “serendipity.”

Spam

“Spam” is a 20th-century linguistic invention, first used in the 1930s as a proprietary name for spiced ham. It’s often used today by English speakers to refer to unwanted email. That usage comes from a 1970s sketch written by the English comedy troupe Monty Python, in which a chorus of Vikings repeatedly chanted “spam.” In 1993, early internet users took inspiration from that Monty Python sketch, co-opting “spam” because of the overwhelming nature of junk email.

You won’t really find an exact equivalent of the email version of “spam” abroad, but you’ll find many words and phrases that are quite close. For example, Vietnamese speakers say thư rác, which literally translates to “garbage letters.” Many German speakers have adopted “spam” as an English loanword, though you may also hear unerwünschte Werbe-E-Mails instead — a mouthful that literally translates to “unsolicited promotional emails.”

Bandwagon

The word “bandwagon” was coined in the mid-19th century in reference to a literal wagon used to carry band members as part of larger circus processionals. But its current meaning was made popular in 1899 by then-New York Governor Theodore Roosevelt, who wrote, “When I once became sure of one majority, they tumbled over each other to get abroad the band wagon.” This new idea of “being on the bandwagon” referred to attaching oneself to any political movement that appeared likely to succeed.

While this concept may seem familiar to non-English speakers, the word “bandwagon” is anything but. Spanish has the phrase tendencia popular, translated as “popular trend,” but it lacks the figurative imagery associated with bandwagons. In Japanese you might hear someone say binjō suru, though that means “to take advantage of” more generally.

Limerence

A big reason why “limerence” doesn’t have a direct translation outside of English is the fact that it’s a relatively new term. This word was coined in a September 11, 1977, article by American psychologist Dorothy Tennov, who admitted it “has no [etymological] roots whatsoever.” She defined it as “the euphoric feeling experienced when first falling in love” — a sensation almost everyone across the world is familiar with, even if they lack a word for it.

One of the closest translations you’ll find is the German word Liebeskummer, literally translated as “lovesickness.” However, the Germans typically use that term in reference to the pain of breaking up, which is kind of the opposite of what “limerence” means to convey. Mandarin speakers use the slang liàn’ài nǎo, which literally translates to “love brain,” to describe being unable to make rational decisions because of being overly infatuated with somebody. But that term also isn’t an exact translation of “limerence.”

Look at the course catalog for a college or university that offers a liberal arts degree and you’ll find a vast array of academic interests. At Williams College in Williamstown, Massachusetts, the No. 1-ranked liberal arts college by U.S. News and World Report, a student can earn a B.A. in American studies, economics, Japanese, sociology, or various other majors. But what specifically classifies a degree as liberal? The tradition goes back centuries and has nothing to do with modern politics. 

The word “liberal,” from the Latin līber, meaning “free, unrestricted, or possessing the status of a free man (as opposed to a slave),” originally appeared in Middle English in the context of being nobly born or a free-born person. However, the related Latin word liberalis meant “noble, gracious, munificent, generous,” and by the end of the 14th century, “liberal” had evolved to also mean “generous, magnanimous.” Over the next several centuries, additional usages for “liberal” developed: By the 16th century it meant “unrestrained, lacking discipline,” and by the early 17th century it was starting to be used as a noun to refer to a person who demonstrated liberal traits. 

In the 18th century, it took on the meaning of “free from prejudice or bigotry.” This reflected Enlightenment theory, which rejected the divine rights of monarchs and hereditary privilege, favoring reason, individual rights, and the rule of law. This is also when the political connotation of “liberal” developed. It comes from the French usage of libéral, referring to someone favoring government action to effect social change and support individual rights, civil liberties, democracy, and societal reforms.

The association of “liberal” with education goes back to the 14th century, when a monastic education focused on intellectual pursuits, not necessarily studies for immediate practical purpose. The subjects of study were divided into two groups: the trivium (grammar, logic, and rhetoric) and the quadrivium (arithmetic, geometry, music, and astronomy). Taken together, they were known as the artes liberales, or the liberal arts. Liberales comes from the Latin root meaning “possessing the status of a free man.” Only certain statuses of men qualified to receive a liberal arts education.

Six centuries later, the tradition of the liberal arts has been preserved in some ways, but it has opened up to a much larger population. A modern liberal arts education includes studies of the humanities, social sciences, natural sciences, and the arts, distinguished from vocational or mechanical training. A Bachelor of Science degree, by contrast, focuses on more technical pursuits, such as chemistry, physics, or engineering.

If someone asked how many steps you averaged each day this week, you could boast that you broke 10K. Or perhaps you have $100,000 sitting in your savings account, in which case you would tell a financial adviser that you have 100K available to invest in the stock market. Whatever the context may be, “K” has become synonymous slang for a thousand, even though the letter isn’t found anywhere in the word “thousand.” So why do we use “K” instead of “T”? It comes from a Greek prefix you’re likely already familiar with.

In ancient Greece, the word χίλιοι (pronounced “chilioi”) meant “1,000.” This word later became written in the Latin alphabet as kilo. Today, “kilo-” primarily serves as a prefix used in metric measurements — for example, one kilometer is equal to 1,000 meters. Or perhaps you’re more familiar with it in the context of computer storage, as a kilobyte (abbreviated “KB”) is equal to 1,000 bytes of memory.

After countries began adopting the metric system in the late 18th and early 19th centuries, academics and scientists alike began developing shorthand for written measurements. “Kilometer” was written as “km,” “kilogram” as “kg,” “kiloliter” as “kl” etc. These shorthand notations were soon adopted by other professions, such as accountants. They could write “100K” instead of “100,000” over and over, thus saving them time and also space on the paper.

By the mid-20th century, “K” had become common slang for 1,000 in a variety of contexts. Today, if someone earns an annual salary of $75,000, people might say they earn 75K. This shorthand is also prevalent in the world of social media. If a person has 15,500 followers on Instagram or X, you might see the total on their profile as “15.5K” instead of the full number.

The U.S., of course, uses imperial measurements without prefixes, but you don’t need to rely on the metric system to understand what the letter “K” means. It’s a simple shorthand of the word “kilo,” and it became popular due to repeated use over the last several centuries.