Complex covers music, sneakers, style, and pop culture — breaking news, exclusive interviews, and the latest drops, all in one place. Catch up on our original series. Find the latest episodes of Sneaker Shopping, GOAT Talk, Life at Complex, Complex News, and much more. As a noun, a complex is a group of units, often a group of buildings. The adjective is stressed on the second syllable, but the noun is stressed on the first syllable. A complex is a structure in the unconscious that is objectified as an underlying theme —like a power or a status —by grouping clusters of emotions, memories, perceptions and wishes in response to a threat to the stability of the self. COMPLEX definition: composed of many interconnected parts; compound; composite. See examples of complex used in a sentence. COMPLEX definition: 1. involving a lot of different but related parts: 2. difficult to understand or find an answer to…. Learn more. COMPLEX meaning: 1. involving a lot of different but related parts: 2. difficult to understand or find an answer to…. Learn more. Some common synonyms of complex are complicated, intricate, involved, and knotty. While all these words mean having confusingly interrelated parts, complex suggests the unavoidable result of a necessary combining and does not imply a fault or failure. complex, complicated, intricate, involved, knotty mean having confusingly interrelated parts. complex suggests the unavoidable result of a necessary combining and does not imply a fault or failure. This disambiguation page lists articles associated with the title Complex. If an internal link incorrectly led you here, you may wish to change the link to point directly to the intended article.