Uggo 

The noun for the term “ugly”

Damn look at that girl over there, she’s an uggo!!

Uggo by ImFanzo January 15, 2018

Uggo 

Really ugly , a proper minger , see also “clapped” British slang made popular by u/im0g3n

“That u/Im0g3n is a right uggo”
“I know my dude she should wear a paper bag on her head”

Uggo by Thundercloud939 December 22, 2019

Uggo 

The name of a seggsy birgin boy

He is such an uggo

Uggo by Cocoapuffs200 May 3, 2021

uggo 

To be hideous in nature, or Richard-like in appearance

Richart Fartbeck the Turd is big time uggo, due in large part to his gigantic nose and small beady eyes

uggo by Richard Harbeck January 13, 2023

Uggo 

An obese person who thinks they are pretty

A girl’s tinder profile said she identified as skinny, what an uggo.

Uggo by Coggybottom June 4, 2025

Uggo

Someone who used to wear Uggs

You were such an uggo when you had those uggs back in 2014

Uggo by RaidoMani March 20, 2026

Uggo Mode 

Used to describe something in an ugly manner.
"Uggo mode" is frequently used by the fastest growing community on the internet (also known as "Greg") in Danny Gonzalez's Minecraft Twitch streams.

Person 1: Hey man, you see that house?
Person 2: Yeah man, it's full-on uggo mode.

Uggo Mode by yeslan April 22, 2021