thelarche 

the initial stage of breast development at the commencement of puberty in preteen girls;
Tanner Stage 2 in breast development;
budding breasts;
breast buds;

The patient shows early signs of thelarche, particularly on the left side.

thelarche by Alias Virtualis April 22, 2013

Treyarched 

1) A term used to describe inconsistencies and epic fails in any game made by the company, Treyarch.

When such things happens a person becomes enraged with the game they are playing, but passively put it off knowing they have been Treyarched.

2) The art of being trolled by the company Treyarch.

A. Prolonged exposure to being Treyarched can lead to multiple rages and the buying of many controllers. If your friend suffers from being Treyarched, it is best to get him away from the game as soon as possible, or he will become medically insane.

Dude wtf!? How did i hit him when my aim was off, but when I followed him perfectly none of my rounds hit and he killed me? I just got Treyarched man.

Treyarched by IxFuriousJxI May 5, 2011

TheArchfiend 

A seemingly intelligent and respectable man on YouTube that, when observed closely like the animal he is, is nothing more than a high-school level pseudo-intellectual who thinks he's always right, and get's upset when you expose him for the asshole that he is.

Just what is his problem, you may ask? Well, he's a hypocrite in that he makes videos exposing "YouTube Whores", when he himself is one because he makes the videos in order to get more money off of the views that the fanboys/fangirls of the target in question give him.
Not to mention, if you put him in Intellectual Checkmate, and expose him in a comment saying just how much of a bad-tempered loser he is, he'll block you, even if you were telling him his flaws in hopes he'd improve. This man's ego is infinite.

He's also one of the biggest grammar Nazi's you'll find on the Internet. If he were like other grammar Nazi's and pointed out your mistakes to be helpful, this wouldn't be a problem. However, he's one just for the sole purpose of being a douchebag, and to run away from what would otherwise be a legit argument against him.

All in all, he's a hypocritical, asshole grammar Nazi who's about as intelligent as an ant with downs syndrome.

Intelligent person who made one little typo: Archfiend, your a butthurt loser who can't handle it when people expose you for the tool you are.

TheArchfiend: *you're

The perfect user: What's the matter Archie? Can't stand being completely and utterly exposed? What are you going to do? Block me? You're such a fucking crybaby. Ha!

*User has been blocked*

TheArchfiend by Hādokoa· Panku November 6, 2012

Treyarched 

1. To make a mistake; bungle something.
2. A failure, someone who got really messes up.

The word comes from Treyarch, game company who fucks up all the time starting sometimes after the release of the great Call Of Duty United Offensive.

Current Treyarched PC games include (non-exhaustive):

- Call of Duty 3, Call of Duty World At War, Quantum of Solace;

Its treyarched man ....forget it!
This game's been treyarched! Its not working....

Treyarched by Michael_john February 9, 2009

Theacher 

Ultimate prepared human main that have a extreme resistant of cringe and willing to help random peoples clueless kids.
And having a shitty monthly payment. 𝐑𝐄𝐒𝐏𝐄𝐂𝐓

Kid: Ah..Theacher?
Theacher: Okay what again?
Kid: I want to go to the bathroom
Theacher: Okay go then
Kid: I need help for pee
Theacher: Yare yare daze

Theacher by GLaDOS_ March 20, 2020

thearchy 

1. Rule by a god or gods

2. Funny fnf song hahaha

Can thearchy be used in modern day sentences...? I guess so.

thearchy by Dogera February 23, 2022

TheArchfiend 

A very logical, semi-popular user on YouTube that speaks the truth. He usually calls out "YouTube whores" for using exploits on YouTube such as taking advantage of misleading titles, misleading thumbnails, and use of multiple channels. He originally made his YouTube channel to "speak his mind", but now most of his videos are meant towards events on YouTube.

Hater: "lol archfiend ur just jealous cuz shanedawson has more vid views then u do"

TheArchfiend (in reply to the hater): "Thank$ for watching thi$ video."

TheArchfiend by AnonOfAll May 15, 2011