Antonyms for the phrase "tear apart" would include words that connote repair, restoration, and preservation. Examples of such antonyms include mend, fix, build, construct, unite, build up, and preserve. These antonyms convey a sense of building rather than destruction, and speak to the idea of creating rather than tearing down. Antonyms for "tear apart" can also include words that imply harmony and cooperation, such as unite, join, and connect. Taken together, the antonyms for "tear apart" illustrate the importance of working together to build something lasting and positive, rather than destroying or tearing it down.