The antonyms for the word "topped off" are "emptied out," "depleted," "drained," "voided," or "eliminated." These terms refer to a state of having nothing left or being completely emptied, as opposed to being filled or completed. For instance, if a bottle is emptied out, it means that all its contents have been removed, leaving it completely vacant. Similarly, if a stockpile is depleted, it suggests that all its resources have been used up, leading to a scarcity of provisions. Therefore, the antonyms of "topped off" indicate a process of emptying, depleting, or eliminating something rather than filling it up.