This is the 2053rd most frequent German word.
saß
"Saß" is the past tense form of "sitzen," meaning "sat."
Here, 'saß' is used as the simple past (Präteritum) form of 'sitzen', describing a past action in a narrative context.
Er saß still in der Ecke des Raumes.
He sat quietly in the corner of the room.
In this example, 'saß' indicates the state of sitting that happened and lasted in the past relative to the present moment of speaking.
Ich weiß nicht, wie lange er schon da saß.
I don't know how long he had already been sitting there.
The word 'saß' here again presents a situational description in the past, emphasizing the setting during an event.