SAEDNEWS: “Salty” means feeling bitter, annoyed, or upset, especially after losing or being embarrassed. It describes someone who reacts with anger or a bad attitude because things didn’t go their way.
According to Saednews, The English slang term “salty” means feeling upset, bitter, or annoyed, especially after losing, being embarrassed, or facing criticism. It is often used to describe someone who reacts with frustration or displays a bad attitude because something did not go their way.
Salty = Upset, bitter, or annoyed
When someone is described as “salty,” they are usually upset or irritated because they lost a game, were embarrassed, or did not get the outcome they wanted. Their frustration may show through sarcastic comments, complaints, or a rude attitude.
The term is commonly used in casual conversations, online discussions, gaming communities, and social media.

“He's just salty because he lost.” — He is upset because he lost.
“Don't be salty about it!” — Don't be bitter or upset about it!
“She got salty when everyone laughed at her mistake.” — She became annoyed and embarrassed when everyone laughed at her mistake.
Related slang: “Stan” — A term used to describe an extremely devoted or enthusiastic fan of a celebrity, artist, or public figure.