A ghetto word used by many Americans after it blew up in 2019/2020 within the realms of Stan Twitter.
It is used to end sentences or to agree with someone.

agreeing with someone 😝

Periodt is a onomatopoeia type word

“PERIOD!” ({peer-ee-it}) or “PERIODT”

1. Commonly used as an exclamation of feeling to describe how great something was or is.

2. A dismissal; End of conversation; to, in slang terms put “it” on something; commonly used in a pointed manner to get a point across.

3. A way to express how pleased you are with someone’s actions or attributes.