A minor dust-up is a small disagreement or argument between two people. It is often used to describe a brief altercation that does not escalate into a full-blown fight. The term can also be used to describe a minor dispute between two groups or organizations. In this context, the crossword solutions SPAT and TIFF are both synonyms for minor dust-up. A SPAT is a brief argument or disagreement, while a TIFF is a petty quarrel or squabble.