The term 'send back' can be expressed in a variety of ways. The crossword solutions for this term include 'ECHO' (4 letters), 'remand' (6 letters), 'RETURN' (6 letters), 'REMIT' (5 letters), and 'refusetoreceive' (15 letters). 'ECHO' means to repeat something, while 'remand' is to send someone back to prison or to a lower court. 'RETURN' is to send something back to its original place, while 'REMIT' is to cancel or reduce a debt or punishment. Finally, 'refusetoreceive' is to reject or decline to accept something.