Tech rehearsal is a term commonly used in the performing arts industry to refer to the final rehearsal before a live performance, where technical aspects such as lighting, sound, and stage design are fine-tuned. However, there are several other phrases that can be used as synonyms for tech rehearsal, including dress rehearsal, technical run-through, technical rehearsal, dry run, and full run-through. Each of these phrases refers to the same process of ensuring that all technical elements of a performance are coordinated and working smoothly. A smooth tech rehearsal is crucial for a successful performance, as it ensures that the performers and the technical crew are all on the same page.