phrase Internet Slang

TIL

/ˌtiː aɪ ˈɛl/ · phrase · informal

Today I Learned — sharing a fact that just blew your mind.

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Definitions

1

Used loosely as 'huh, didn't know that,' even for everyday realizations.

“TIL my coworker has been spelling my name wrong for two years.”
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2

The name of a huge Reddit community (r/todayilearned) dedicated to interesting trivia.

“Saw it on TIL, apparently bananas are berries and strawberries aren't.”
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3

Stands for 'today I learned,' used to share a surprising fact you just picked up.

“TIL octopuses have three hearts.”
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TIL In A Sentence

TIL honey never actually spoils.
TIL you're supposed to replace your toothbrush way more often than I do.
Til the building I work in used to be a theatre.

Origin & Usage

Popularized by Reddit's r/todayilearned, one of the site's oldest big communities. The phrase 'today I learned' was already common before the acronym took hold.

Variants tiltoday i learned
Tags #acronym#internet#meme#texting

People Also Ask

What does TIL mean in texting?

It means 'today I learned' and introduces a fact or realization you just discovered. It's a way to share something that surprised you.

Is TIL a Reddit thing?

It's strongly tied to Reddit's r/todayilearned but spread everywhere. People now drop TIL in texts and captions casually.

Can TIL be sarcastic?

Yes, people use it sarcastically for obvious or annoying realizations, like 'TIL my roommate never does dishes.'

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