The term 'close forcefully' can be described by four crossword solutions: SLAM (4 letters), AMAIN (5 letters), WREST (5 letters), and SPEW (4 letters). SLAM is an informal verb meaning to shut something with a loud noise, usually a door. AMAIN is an archaic verb meaning to take away or seize by force. WREST is a verb meaning to take something away from someone by using physical strength. Finally, SPEW is a verb meaning to eject or expel something forcefully. All of these words describe the act of closing something forcefully.