salty

In its literal sense, salty describes something that tastes of salt or has a high salt content. However, in modern slang, it describes a person who is upset, bitter, or acting in a prickly way because they are frustrated or have experienced a minor defeat. The mental image is of someone "rubbing salt in a wound." Use this word when you notice someone being unnecessarily grumpy or defensive after a loss or a negative interaction. It is very common in gaming or competitive contexts but is widely used in casual conversation to describe someone's sour mood.
In conversation
Gaming loss
I can't believe I lost that round, the game is totally broken!
I can't believe I lost that round, the game is totally broken!
Don't be so salty, Alex. You just missed your shots.
Don't be so salty, Alex. You just missed your shots.
Used here to point out someone's bad attitude after losing.
Work frustration
Why is Sarah being so short with everyone today?
Why is Sarah being so short with everyone today?
She's still salty about not getting that promotion last week.
She's still salty about not getting that promotion last week.
Used to explain that someone is holding onto a grudge or disappointment.
Examples
This soup is a little too salty for my taste.
This soup is a little too salty for my taste.
He got really salty when I pointed out his mistake.
He got really salty when I pointed out his mistake.
There is no need to be salty just because you lost the bet; it was all in good fun.
There is no need to be salty just because you lost the bet; it was all in good fun.