Rehearse/rɪˈhɜːrs/ Definition 1 of 3Pro Tip 1/3Planned Event Use 'rehearse' when preparing for a specific planned event or performance. The choir will rehearse the final song today. Pro Tip 2/3Group Activity Rehearsing often involves multiple people working together, not just solo practice. We all need to rehearse our dance moves in unison. Pro Tip 3/3Not Just Theater 'Rehearse' isn't limited to theater and can refer to any performance, like music or dance. Tomorrow we'll rehearse the guitar duet.