This is the 75th most frequent Portuguese word.
só
"Only" or "alone," depending on context.
Here, 'só' functions as an adverb meaning 'just' or 'only', denoting a limitation to the verb action.
Eu só quero ser feliz.
I just want to be happy.
In this sentence, 'só' is an adjective meaning 'alone' or 'by oneself', describing a state of the subject.
Ela estava só em casa.
She was alone at home.
Here, 'só' acts as an adverb meaning 'only', specifying a restriction regarding what can be eaten.