The term 'DUKE IT OUT' is an idiom that means to settle a dispute or argument by engaging in a physical altercation. The crossword solutions for this term are SPAR (4 letters), FIGHT (5 letters), BOX (3 letters), LOCKHORNS (9 letters), and GOTOETOTOE (10 letters). SPAR and FIGHT refer to physical combat, while BOX and LOCKHORNS refer to boxing. GOTOETOTOE is a variation of the phrase 'toe-to-toe, ' which is another way of saying that two people are facing each other in a confrontation.