The antonyms for the phrase "brake in to pieces" can be "assemble," "construct," "create," or "build." These words denote the opposite action of breaking into pieces. Assembling means putting pieces together to form a whole. Constructing entails building something from multiple components. Creating and building also emphasize the potential for making something new. The antonyms for "break into pieces" can be used in a variety of contexts from manufacturing to creative pursuits. The opposite action of breaking signifies healing, construction, growth and development that go hand in hand with the creation of something new.