Complex Synonyms
Words/phrases that have a similar definition to the word "complex" include...intricate, complicated, knotty, composite, development, neurosis, multifarious, multiplex, multiuse building, obsession, set of buildings, compound, difficult, psychosis, thorny, center, involved, dense, fixation, multifaceted, multipart, byzantine, phobia, convoluted, hang-up
Other words in thesaurus...