contretemps
noun /ˈkɒntrətɒ̃/
  /ˈkɑːntrətɑ̃ː/
 (plural contretemps)
 (from French, formal or humorous)- an unpleasant event or an embarrassing occasion when people disagree 
- They have been ignoring me since our last contretemps.
 
Word Originlate 17th cent. (originally as a fencing term, denoting a thrust made at an inopportune moment): French, originally ‘motion out of time’, from contre- ‘against’ + temps ‘time’.