What TIL Means on Reddit

TIL is just one of the acronyms popular in social media

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If you're active on Reddit, the social news and discussion website, you regularly see the term "TIL" in the titles of posts. This is a slang acronym that stands for "Today I Learned."

TIL gets its name from a subreddit with the same name, called Today I Learned, where visitors can learn something new through posts made by other Reddit users.

It's also common to see TIL used in the comments section on Reddit for a user to express that the article or someone else's comment, was new information to them. Because of its popularity, TIL is also used in other contexts like in instant messaging, email, text, etc. 

How to Use TIL on Reddit

Reddit members use TIL in the titles of their postings when they've just discovered something amazing about the world—something that contradicts common knowledge or a fact that is particularly important and of interest to readers.  

TIL is a slang way of saying, "Pay attention: This might be good information for you" or "You might find this interesting."

Here are some examples of this TIL expression in Reddit culture:

  • TIL that most soldiers who commit suicide have never seen combat.
  • TIL that Pope Francis and Pope John Paul the Second are honorary members of the Harlem Globetrotters
  • TIL the earth was almost struck by another asteroid last week, but it never made the news.
  • TIL the patent for the fire hydrant was lost in a patent office fire.
  • TIL that Denzel Washington has a deformed hand.
  • TIL the first can opener was patented on January 5, 1858, 50 years after the can was invented. Prior to its invention, people used hammers and chisels to open cans.
  • TIL that most millennials have less than $1,000 in savings.
  • TIL that male puppies let female puppies win when playing to keep the game going.

TIL Isn't Limited to Reddit

Although TIL is most often seen on Reddit, it may also appear on other social media websites, such as Facebook and Twitter, where it means the same thing as it does at Reddit. Terms on the ever-growing list of acronyms used as shorthand on the internet also show up in emails, text messages, and social posts.

Digital culture has spilled over into daily life, and the modern generation uses some of these expressive internet terms in daily conversation. Perhaps the most ubiquitous crossover terms are LOL (laughing out loud) and OMG (oh my god). To date, TIL hasn't made that transition.