Ros 

Someone who abandons their party or side; rat.

Jake is such a ros, he snitched on our group to the principal.

Ros by nertfyto December 30, 2023

ros bif

A silly insult used by the Frogs to define the British, apparently because we eat too much roast beef.

Frenchie: Tu es un ros-bif!

Limey: Qui-a-mangé toute les tourtes?

ros bif by Gumba Gumba March 6, 2004

ros bif

A silly insult used by the Frogs to define the British, apparently because we eat too much roast beef.

(Note the lack of dashes)

Jacques: Tu es un ros bif!
Nigel: Qui a mangé toutes les tortes?

ros bif by Adam January 14, 2005

ros mohd amin 

An easy-going girl who loves to laugh and make people happy. Even when she herself is sad, she will hide it and apply a fake smile on her face.

That is Ros Mohd Amin the girl who loves to laugh

ros mohd amin by ateengirlwholikesenglish January 4, 2018

ros-bot 

A powerful ally for lazy gamers.

Ros-bot is a big help for people like Jamal, Empower and Nasioc.

ros-bot by Ross Botter December 27, 2017

ros-hel

Strong, talented, unique, one of a kind Jamaican princess
Can be persistent always walk with a straight face and IDGAF attitude
Doesn't like meeting new people that much but when she does she's quiet and behave like an angel until you pissed her off or she gets use to you and she show you the BEAST within
Doesnt take disrespect lightly and will smack a bitch if she as a reason to.
Never keep more than two female friends but as many guys as pal
Most important Ros-hel is bipolar asf but also the nicest to be around

Don't ever try to analyze Ros-hel because you'll just find Ros-hel
Understand: no difference from what you see

ros-hel by Ros-hel July 27, 2018

RoS attitude

RoS attitude also know as Ruins of Surmia attitude is when you think your guild wars 2 server is the greatest, but you end up flaming each other constantly in team chat, never reaching t1.

New player: Why is my team spamming chat complaining about others being bad when we are all bad?
Old player: Son it is but the RoS attitude hitting us again, do not worry next shuffle we shall be free to enjoy teamchat again.

RoS attitude by D man Trump man May 24, 2020