Usually used at the end of a sentence or rant to express the end of a conversation, no questions asked. It can so be used as a way to agree to a certain statement. The 'T' at the end is supposed enunciated, with the 'd' being silent, or not said at all.
In texting, the amount of 'T''s added at the end is equal to how much one agrees with a specific topic.
Emily: "Samantha hooked up with Brad last night!"
Sarah: "Periodt!"
"If your man doesn't clean the house at all, break up with him periodt."
"Omg Ariana is coming out with a new album!!!"
"PERIODTTTTTTTT"
The Wiggette version of "period" or "and that's final".
Used at the end of a sentence or argument when the speaker has a very high amount of (usually misplaced) confidence that they are in the right.
Also occasionally slapped onto the end of some really basic motivational quotes to put on Instagram or Snapchat to make it seem as if the poster is saying something incredibly revolutionary or meaningful when in fact they pulled the quote from a BuzzFeed list made back in 2016.
"Don’t let yesterday take up too much of today, periodt."
Form to express something doesn't allow any discussion.
-This actor is so handsome!
-Periodt sis! You're absolutely right.
"Periodt" is a word used at the end of a sentence, meant to add emphasis to a point that has been made. It is often regarded as a more extreme or intense version of "period." It is also often preceded by the words "and that's on" to add further emphasis.
#periodtpooh