Incumbency/ɪnˈkʌmbənsi/ Definition 1 of 3Pro Tip 1/3Political Context Often used in political discussions about the duration of an elected official's service. The mayor's incumbency saw significant urban development. Pro Tip 2/3Reelection Reference Used when mentioning the period someone is seeking reelection. During her incumbency, she announced her plans to run again. Pro Tip 3/3Positive Connotations Can imply competence and experience while holding a position. His incumbency was marked by efficient leadership.