syn·co·pa·tion 
(sĭng′kə-pāshən, sĭn′-)
(sĭng′kə-pāshən, sĭn′-)n.
1. Music A shift of accent in a passage or composition that occurs when a normally weak beat is stressed.
2. Something, such as rhythm, that is syncopated.
3. Grammar Syncope.
syncopationfrom Mozart's
Symphony No. 25