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
  • Preventive maintenance at a scale that was previously cost-prohibitive.
    — Sumeet Salwan, Forbes.com, 22 Sep. 2026
  • The trade-off between delaying retirement and building new plants depends on fuel prices, plant efficiency and maintenance needs.
    — Akshaya Jha, The Conversation, 22 Sep. 2026
Noun
  • This pristine preservation gives a direct window into the chemical womb of our planetary neighborhood.
    — Mrigakshi Dixit, Interesting Engineering, 22 Sep. 2026
  • Stoppers are reusable and the rechargeable pump gives up to 100 preservation cycles on a full charge.
    — ABC News, ABC News, 21 Sep. 2026
Noun
  • There are solutions for age verification that are both accurate and privacy preserving.
    — Annie Chestnut Tutor, Boston Herald, 18 Aug. 2025
Noun
  • Today, there are around 350 adult black robins living on two pest-free nature reserve islands, a recovery that helped put New Zealand conservation efforts on the international map.
    — Adam Pourahmadi, CNN Money, 21 Sep. 2026
  • Safari West was founded in 1993 by Nancy and Peter Lang as a wildlife conservation and education center.
    — Catherine Garcia, TheWeek, 21 Sep. 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 27 Sep. 2026.

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