This is the 8440th most frequent Swedish word.
ba
"Ba" is a casual Swedish word meaning "just" or "only."
Here, 'ba' is informal Swedish slang derived from 'bara', used in conversation to imply 'just' or 'simply'.
Jag ba såg honom gå förbi.
I just saw him walk by.
In this sentence, 'ba' serves the role of an emphatic expression, stressing an imperative statement informally.
Du ba måste försöka hårdare!
You just have to try harder!
Here, 'ba' illustrates quick or blunt action or decision-making informally, conveying spontaneity.