The term "fragmentize" means to break something into small pieces or fragments. Its antonyms would involve the opposite action of bringing something together or making it whole. Some possible words that may serve as antonyms for "fragmentize" could be unite, combine, integrate, consolidate, coalesce, merge, or assemble. These words describe the act of putting several parts together to form a whole, rather than breaking something apart. With the help of these antonyms, we can express a more complete notion and convey a message of unity, strength, and interconnectedness rather than fragmentation and disarray.