On point is a popular idiom or slang expression to describe something that’s relevant, perfect, or stylish. In sentences, on point is usually a predicate adjective that describes the subject. People sometimes spell it en pointe, which is a French ballet term that means “on the tips of the toes.”
This guide covers the three main uses for on point and explains when you might see en pointe instead. Curious about other slang expressions or English idioms? QuillBot’s AI Chat can provide detailed explanations and examples.
On point examplesRelevant: At the end of the press conference, one reporter asked a question that was especially on point.
Perfect: The mac-n-cheese was delicious, and the pies were on point.
’Tis the season when you might start hearing the expression “Bah, humbug!”—a phrase used to show annoyance or displeasure towards something others typically enjoy, like Christmas, holidays, or other festive celebrations.
Curious about how to use bah humbug in different contexts? QuillBot’s AI Chat is here to help.
Bah humbug meaning examples“Are we seriously playing Christmas music in October? Bah humbug!”
“Not another holiday potluck to prepare for—bah humbug!”
“It’s just one Christmas game; no bah humbug allowed.”
BTS is a common abbreviation in text messages, social media posts, and online conversations, and its meaning depends on the context.
The most common definition of BTS is “behind the scenes,” but it can also refer to the globally-famous K-pop group Bangtan Sonyeandan (aka Beyond the Scene) as well as “back to school,” “be there soon,” or even “base transceiver station” and “build-to-suit.”
This guide breaks down every meaning of BTS, how to use it, and how to understand it instantly when you see it online.
Curious about what other abbreviations mean? Ask QuillBot’s free AI Chat.
BTS examplesBehind the scenes: Stranger Things posted new BTS footage of Season 5, Episode 3.
K-pop group: During a 2026 world tour, BTS will perform at least 30 shows in North America.
Back to school: We’re offering 30% off school supplies and other BTS savings from August 1 through Labor Day.
Lux means “a measure of illumination on a surface” in English and “light” in Latin. It is also sometimes used as an abbreviation for the country of Luxembourg.
Lux in a sentence examplesThe hallway measured only 80 lux, which is below the recommended safety standard.
This flight’s trajectory is LUX to CDG.
Yale’s motto is “Lux et Veritas.”
To learn more about the meaning of lux, or to ask specific questions about this word, try QuillBot’s AI Chat.
A special day in the Christian religion, usually on January 6, celebrating the visit of the Three Kings (Wise Men) to baby Jesus (e.g., “Many Christians celebrate Epiphany with a family meal”)
A moment when you suddenly realize or understand something (e.g., “I had an epiphany and realized that I should follow my passion”)
TipIf you’re researching Epiphany, you can ask QuillBot’s free AI Chat about the religious significance of this festival and how it’s celebrated around the world.
If you’ve spent any time on TikTok, Instagram Reels, or YouTube Shorts, you’ve probably come across the phrase “6-7” (pronounced “six-seven”). The phrase has become one of 2025’s most viral memes, but its meaning isn’t immediately clear.
The phrase “6-7” comes from the song “Doot Doot (6-7)” by Skrilla, released in early 2025. The line that sparked the trend appears in the chorus:
The way that switch brrt, I know he dyin’ (oh my, oh my God) 6-7, I just bipped right on the highway (bip, bip)
The exact meaning of “6-7” is intentionally vague. Skrilla hasn’t given a clear explanation, though some theories have emerged. Some speculate it might refer to 67th Street, possibly linked to the artist’s background or community. Others think it’s related to “10-67,” the police radio code used in some areas to notify of a death.
Despite these theories, most of the time “6-7” doesn’t hold a specific meaning. It functions more as a catchy, rhythmic phrase people repeat for humor or recognition, much like other viral slang phrases such as “skibidi” or “rizz.”
Published on
August 29, 2025
by
Nicole Routh, M.Ed
Revised on
November 4, 2025
Whether you’re downloading a report, signing a digital contract, or submitting a resume, chances are you’ve used a PDF document. But what does PDF actually mean, and why is it such a common file format?
PDF stands for Portable Document Format—a file type developed by Adobe that preserves a document’s layout, fonts, and formatting across all devices and operating systems. PDF is often preferable when you’re sharing confidential information or when you don’t want anyone to make changes.
PDF examplesIleana has written a resume and cover letter for an internship managing social media for a nonprofit organization. She saves each document as a PDF before uploading them to the job application portal so that the recruiters and hiring managers won’t accidentally change her contact information or formatting when they review her application.
A psychology professor asks the students to read a case study from an academic journal. The article from the journal website is a PDF so that the content and layout look the same for everyone who reads it.
TipIf you read a lot of PDFs for school or work and need to make notes on them, try QuillBot’s free online PDF editor. The tool allows you to type on the PDF or highlight important details without modifying the original text.
BFF is an abbreviation for “best friend forever” that people use in casual conversation and very informal writing. When someone says “my bff,” they might be referring to their #1 closest friend or one of many close friends.
Although BFF is common in text messages and social media posts, people have been saying it since the 1990s (before online communication was common). According to many sources, the earliest use of BFF in the media was on the Friends episode “The One at the Beach” in 1997.
BFF examplesMy BFF is visiting me this June, and I couldn’t be more excited.
Rachel’s BFF works for a fancy catering company in New York.
We’ve been BFFs with Chad since 2010.
TipWhen you’re curious about abbreviations like BFF, QuillBot’s free AI Chat can answer your questions and share fascinating facts.
YMMV means “your mileage may vary.” YMMV is an internet abbreviation that figuratively means “you might get a different result” or “you might have a different experience.” People use YMMV as a disclaimer at the end of social media posts and comments. YMMV is a reference to a common disclaimer in car advertisements about gas mileage.
YMMV examplesIn a Reddit thread about how to deal with unripe peaches, a user posts, “I put my peaches in a brown paper bag for 2 days, and they came out perfect, but YMMV.”
In another online forum, someone asks, “Is a cover letter necessary, or should I just submit a resume?” Someone replies, “I’ve gotten lots of interviews without sending a cover letter, but YMMV.”
TipNew terms and unfamiliar slang words are common in online discussions. The next time you see a term you’re curious about, ask QuillBot’s free AI Chat what it means.
Published on
August 5, 2025
by
Nicole Routh, M.Ed
Revised on
September 29, 2025
A PSA (or public service announcement) is a professional TV or radio ad that raises awareness about a social, environmental, health, or safety issue. Most PSAs are made by government agencies or nonprofit organizations. PSAs have covered topics like car safety, voter registration, Alzheimer’s awareness, and more.
Many PSAs nowadays are also published on YouTube and other online platforms as the main broadcasting format or to supplement a TV ad campaign.
PSA also has an informal meaning in online communication. Social media users sometimes preface posts with PSA when they’re sharing an important update or advice (e.g., “PSA: Tonight’s event is rain or shine, so bring an umbrella”).
TIPPSA is a noun that can be plural or possessive. Add “-s” for a plural noun and an apostrophe + “-s” for a possessive noun.
Plural PSA: The creators of Grey’s Anatomy have aired a variety of PSAs after episodes about serious topics.
Possessive PSA: The PSA’s main purpose was to discourage vaping.
It’s easy to mix up plurals and possessives with initialisms and acronyms, but the QuillBot Grammar Checker can help you write them correctly.
