infrastructure
[noun]
Synonyms: base, basis, bedrock, bottom, footing, foundation, groundwork, substructure, underpinning, understructure, ground, root, substratum

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Antonyms: superstructure

[TahlilGaran] English Synonym Dictionary ▲

in‧fra‧struc‧ture AC /ˈɪnfrəˌstrʌktʃə $ -ər/ noun [uncountable and countable]
[Word Family: noun: infrastructure; adjective: infrastructural]
the basic systems and structures that a country or organization needs in order to work properly, for example roads, railways, banks etc:
Some countries lack a suitable economic infrastructure.
a $65 billion investment package in education, health care and infrastructure
—infrastructural adjective

[TahlilGaran] Dictionary of Contemporary English ▲