U.P 

-Universal Pollutant, refer to somebody or something which is polluting the world. {U.P}
-Ultimate Pollutant

U.P is banned in any of our class WhatsApp group.

U.P by Anti- Pollution October 13, 2018

U P 

Urethral Prolapse

Hey bro you coming to the U P meeting later?
Yeah I hear it's the new cbt.

U P by DabutII October 9, 2019

U.P.

- Universal Pollution
- Ultimate Pollution

Describing someone who is polluting the earth with his face. (Same as V.P- Visual Pollution)

He is such a U.P..
Stop polluting the Earth, U.P.!

U.P. by Universal Pollutants October 11, 2018

U/P 

Shorthand for "user/pass" or "username/password."

Generally used among 1337 hackers or IT professionals when discussing user credentials.

Ok, it's set up, the u/p is john123/password456.

U/P by WerriamMebster July 19, 2010

U.P.

U-ndercover P-artyer Someone who is quiet most the time usually at school but knows how to party on weekends.

Hes a major U.P. NUKKA!

U.P. by CHILLZ1127 June 11, 2006

U.P.

Acronym for Unofficial Patch: a series of bug fixes, texture adjustments and just general gameplay tweaks to games that are publicly modifiable. These patches are not offered with retail copies of the game, and U.P.'s are usually made by skilled game modders or modding projects/collaborations, and not the game developer itself.

The Unofficial Skyrim Patch is an U.P.

U.P. by Unit-Omicron January 26, 2015

U.P.I. 

A spinoff of the term "A.I." or Artificial Intelligence, a "U.P.I." or User-Provisioned Intelligence" is any user-configured, programmatic entity with the capacity to perform tasks like its specific user would. This might include any of the visual, linguistic, behavioral, or decision-making operations an A.I. would perform, but done in a way characteristically identical to the manner of the user being emulated.

A U.P.I. might be a robot you teach to wash and fold your laundry exactly the way you like it, or a piece of software you train to respond to your emails.

Jennifer's intelligent doorbell was equipped with U.P.I., so as I pressed its sleek, glowing button, it quipped back at me in an all too Jenny-like sardonic tone, "Wait.”

U.P.I. by Otomo Money June 2, 2018