Related Clues:

• Don't go well
• Crash or clash
• Look bad together, fashionwise
• Not get along
• Ego conflict
• What plaids and stripes do
• Stripes and polka dots do it
• Be at odds
• Look bad together
• Fail to match, as colors
• Go together like green and purple?
• Come together?
• Mismatch
• Disagree strongly
• Lock horns (with)