Disagreement ( Informal ) (3-2)

I believe the answer is:
run-in
(Other definitions for run-in that I've seen before include "Quarrel" , "Home straight" , "Disagreement (with authority?)" , "Matches late in season" , "Dispute" .)
I believe the answer is:
run-in
(Other definitions for run-in that I've seen before include "Quarrel" , "Home straight" , "Disagreement (with authority?)" , "Matches late in season" , "Dispute" .)