beta is a portuguese slang that characterizes rich white girls from Cascais (rich coast city in lisbon) who vape iqos, think they're better than everybody else, and are daddy's girls. They usually carry bimba y lola bags and daisy print skirts
It also has a masculine equivalent: beto
Girl- Look at Maria do Mar and her bimba y lola.
Boy- She's such a beta, right?
"I have to make frikadellefars, so I can't play videogames anymore" = Beta
"I have to visit my parents for dinner tomorrow, so I have to log off now (when it's 9.30 PM on a saturday) = Beta
"No I don't want to have sex with a prostitute, the money will go to the Bikers" = Beta
Someone who's dog eats their food, and makes them clean it up, and is one-hundred percent not a beta