1. practicing a performance, speech, or presentation before the actual event
Usage: present participle of rehearse
2. repeating or going over something mentally or verbally
Usage: present participle of rehearse

Examples

• The actors are rehearsing their lines for tomorrow’s performance.
• She spent hours rehearsing her presentation before the meeting.
• The band is rehearsing in the garage every evening.
• He kept rehearsing his apology in his head.
• The choir has been rehearsing the same song all week.
• They’re rehearsing the wedding ceremony at the church.
• I was rehearsing what I would say to my boss.