Definition of sustentationnext
1
as in maintenance
the act or activity of keeping something in an existing and usually satisfactory condition argues that a new toll is needed to pay for the long-term sustentation of the city's bridges

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2
as in preservation
the careful maintaining and protection of something valuable especially in its natural or original state the all-important sustentation of Mount Vernon, Monticello, and other national treasures

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Example Sentences

Recent Examples of Synonyms for sustentation
Noun
  • But their buildings still need maintenance, school buses still need to run, and teachers still need to be paid.
    — Bilin Lin, Fortune, 20 Oct. 2026
  • During both, the LIGO and Virgo gravitational-wave detectors were down for maintenance.
    — Robin George Andrews, Scientific American, 20 Oct. 2026
Noun
  • While horology businesses often maintain dedicated storefronts, mobile technicians remain vital to the preservation of these instruments.
    — La'Tasha Givens, CBS News, 20 Oct. 2026
  • In August, the Supreme Court allowed construction to continue, finding that the preservation group likely lacked the right to sue based solely on its objections to the ballroom’s appearance.
    — Rebecca Schneid, Time, 20 Oct. 2026
Noun
  • There are solutions for age verification that are both accurate and privacy preserving.
    — Annie Chestnut Tutor, Boston Herald, 18 Aug. 2025
Noun
  • Bull Shoals was six feet from the conservation pool level, but Beaver, Table Rock, Bull Shoals, Norfork and Greer's Ferry are all lakes that generate hydro-power, which will be reduced because of the low water conditions.
    — Arkansas Online, Arkansas Online, 27 Oct. 2026
  • The Center for Western Priorities, a conservation advocacy nonprofit, first reported the project through a map tracking data centers on public land throughout the American West.
    — Mark Dee, Idaho Statesman, 26 Oct. 2026
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

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Cite this Entry

“Sustentation.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/sustentation. Accessed 28 Oct. 2026.

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