Also found in: Thesaurus, Legal, Idioms, Encyclopedia, Wikipedia.


tr.v. sus·tained, sus·tain·ing, sus·tains
a. To keep in existence; maintain, continue, or prolong: sustain an effort.
b. To keep up (a joke or assumed role, for example) competently.
a. To supply with necessities or nourishment; provide for: the income needed to sustain a family.
b. To support the spirits, vitality, or resolution of; encourage: We were sustained by her unflagging optimism.
3. To support from below; keep from falling or sinking; prop: The beams sustain the weight of the roof.
a. To bear up under; withstand: can't sustain the blistering heat.
b. To experience or suffer: sustained minor injuries.
5. To affirm the validity of: The judge has sustained the prosecutor's objection.
A capacity of a musical instrument to continue the resounding of a note or tone.

[Middle English sustenen, from Old French sustenir, from Latin sustinēre : sub-, from below; see sub- + tenēre, to hold; see ten- in Indo-European roots.]

sus·tain′er n.
sus·tain′ment n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


The provision of personnel, logistic, and other support required to maintain and prolong operations or combat until successful accomplishment or revision of the mission or of the national objective.
Dictionary of Military and Associated Terms. US Department of Defense 2005.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.sustainment - the act of sustaining life by food or providing a means of subsistencesustainment - the act of sustaining life by food or providing a means of subsistence; "they were in want of sustenance"; "fishing was their main sustainment"
support - the activity of providing for or maintaining by supplying with money or necessities; "his support kept the family together"; "they gave him emotional support during difficult times"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in classic literature ?
A composed and unobtrusive self- sustainment was noticeable in Daniel Doyce--a calm knowledge that what was true must remain true, in spite of all the Barnacles in the family ocean, and would be just the truth, and neither more nor less when even that sea had run dry--which had a kind of greatness in it, though not of the official quality.
Known as the Syrian Logistics Cell (SLC), hand-selected Soldiers of the Monticello, Mississippi-based 184th Sustainment Command leads the 25 member team for the 1st Theater Sustainment Command.
Boeing has been awarded a $14.31B indefinite-delivery/indefinite-quantity contract for the modification, modernization, engineering, sustainment and test of the B-1/B-52 weapons systems.
In the January-March 2019 edition of Army Sustainment, "Sustainment Command Relationships for the Next Fight," included inaccurate information.
Lockheed Martin (NYSE: LMT) said it received a USD262.8 million contract from the US Air Force for sustainment of the Kingdom of Saudi Arabia's F-15 sensor suite.
From the first issuance of Better Buying Power (BBP) in 2010, its key sustainment initiative has focused on Performance-Based Logistics (PBL).
M2 EQUITYBITES-April 9, 2013-Comtech announces modification of BFT-1 sustainment contract from US Army; awarded initial order for Year 2 of sustainment services(C)2013 M2 COMMUNICATIONS
(NASDAQ: CMTL) said that its Germantown, Maryland-based subsidiary, Comtech Mobile Datacom Corp., modified its Blue Force Tracking (BFT-1) sustainment contract and received an initial order for Year 2 of BFT-1 sustainment services.
TELECOMWORLDWIRE-April 9, 2013-Comtech Telecommunications gets initial order for second year of sustainment services(C)1994-2013 M2 COMMUNICATIONS
The Combined Arms Support Command (CASCOM) has created the Sustainment Unit One Stop portal.
"The art of being wise," psychologist William James once wrote, "is the art of knowing what to overlook." The intelligence requirements of a sustainment command demand that more be done with less.

Full browser ?