1. complex, composite, whole

usage: a conceptual whole made up of complicated and related parts; "the complex of shopping malls, houses, and roads created a new town"

2. complex, coordination compound, compound, chemical compound

usage: a compound described in terms of the central atom to which other atoms are bound or coordinated

3. complex, feeling

usage: (psychoanalysis) a combination of emotions and impulses that have been rejected from awareness but still influence a person's behavior

4. building complex, complex, structure, construction

usage: a whole structure (as a building) made up of interconnected or related structures


1. complex (vs. simple), analyzable, decomposable, Byzantine, convoluted, involved, knotty, tangled, tortuous, colonial, compound, complicated, composite, compound, daedal, Gordian, interlacing, interlinking, interlocking, interwoven, intricate, labyrinthine, labyrinthian, mazy, multifactorial, multiplex, thickening, compound, difficult#1, hard

usage: 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"

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See also: complex (Dictionary)