contretemps
/ˈkɒntrəˌtɑːn/noun
(复同单/-ˌtɑːnz/)
1- a minor dispute or disagreement小争执; 不和, 龃龉：
she had occasional contretemps with her staff.
她偶尔会和职员发生龃龉。
1.1
- an unexpected and unfortunate occurrence意外的不幸。
词源
late 17th cent. （originally as a fencing term, denoting a thrust made at an inopportune moment）： French, originally 'motion out time', from contre- 'against' + temps 'time'.