complex
noun
a conceptual whole made up of complicated and related parts
“the complex of shopping malls, houses, and roads created a new town”
Synonymscompositea compound described in terms of the central atom to which other atoms are bound or coordinated
Synonymscoordination compound(psychoanalysis) a combination of emotions and impulses that have been rejected from awareness but still influence a person's behavior
a whole structure (as a building) made up of interconnected or related structures
Synonymsbuilding complex
adjective
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”
Oppositessimpledifficult to analyze or understand
“a complicated problem”
“complicated Middle East politics”
Synonymscomplicated
Source: WordNet 3.1, Princeton University
