This is the 6179th most frequent Polish word.
aś
The Polish word "aś" is an informal interjection expressing hesitation or surprise, similar to "uh" or "um" in English.
In this sentence, 'aś' is part of the word 'aś wiedział', which is used in informal Polish to indicate a conditional or hypothetical scenario.
Co byś zrobił, aś wiedział, że to się stanie?
What would you do, have you known this would happen?
Here, 'aś' is used as a colloquial short form in place of 'aż' to mean 'already'. This usage is common in spoken dialects or regional contributions to the language.
Myślałem, że aś już wiesz.
I thought, you'd already know.
In this instance, 'aś' is used creatively to indicate emphasis or questioning tone, albeit this usage is less formal and region-specific.