What does TIL mean?
TIL means today I learned — introducing a fact the writer has just discovered.
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Acronym. Also written today I learned.
Where it comes from
Popularised by Reddit’s r/todayilearned, where it became the required prefix for posts sharing surprising facts, then spread across platforms as a general format.
How it is actually used
Carries a specific tone: pleasant surprise, with no embarrassment about not having known. That absence of defensiveness is why it works — "TIL" is a friendlier opener than stating the fact alone. Widely used for small professional discoveries, which makes it well suited to product and developer accounts.
Examples
- "TIL you can drag to reorder these"
- "TIL the shortcut existed all along"
- "TIL our own docs cover this"
Can a brand use it? Safe for brands
Safe and genuinely effective for brands — sharing a small feature discovery as a TIL is less promotional than announcing it, and gets better engagement for the same information.
Related terms
Frequently Asked Questions
What does TIL mean?
Today I learned. It introduces a fact the writer has just found out.
Where did TIL come from?
Reddit’s r/todayilearned, where it is the required prefix for fact posts.
Can brands use TIL?
Yes, and it works well — framing a feature as something you just learned is softer than announcing it.
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