[n] a whole structure (as a building) made up of interconnected or related structures
[n] a conceptual whole made up of complicated and related parts
[n] (psychoanalysis) a combination of emotions and impulses that have been rejected from awareness but still influence a person's behavior
[n] a compound described in terms of the central atom to which other atoms are bound or coordinated
[adj] complicated in structure; consisting of interconnected parts; "a complex set of variations based on a simple folk melody"; "a complex mass of diverse laws and customs"
analyzable, building complex, Byzantine, colonial, complicated, composite, composite, compound, convoluted, coordination compound, decomposable, gordian, interlacing, interlinking, interlocking, interwoven, intricate, involved, knotty, labyrinthian, labyr
abstruse, acculturation, amalgamated, ambiguous, ambivalent, amphibious, arduous, baffling, balled up, bewildering, beyond one, blended, brutal, Byzantine, can of worms, castration complex, Chinese puzzle, civilization, collectivity, combined, complicated