The term 'stuck fast' can be described by four different crossword solutions: WEDGED (6 letters), JAMMED (6 letters), LODGED (6 letters), and mired (5 letters). WEDGED means to be firmly fixed in place by or as if by wedges, while JAMMED means to be tightly packed or blocked. LODGED means to be firmly fixed in place, and mired means to be stuck in a difficult situation. All of these words describe the term 'stuck fast, ' which is when something is unable to move or be removed.