Crossword clues for Unfilled: Abbr. 3 lettersAnswerClueTBAUnfilled: Abbr.TBAUnfilled-slot abbr.TBAUnfilled schedule slot abbr.TBAAbbr. for an unfilled spotTBAAbbr. in an unfilled TV slotTBAAbbr. for an unfilled slotTBAAbbr. in an unfilled time slotTBAUnfilled time slot abbr.TBAUnfilled, as a time slot: Abbr.