sustain Meaning, definition in Cambridge English Dictionary
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Meaning of "sustain" - English Dictionary

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sustainverb [T]

uk   us   /səˈsteɪn/

sustain verb [T] (CONTINUE)

C2 to cause or allow something to continue for a period of time: The economy looks set to sustain its growth into next year. He seems to find it difficult to sustain relationships with women.US The judge sustained (= accepted) the lawyer's objection.C2 to keep alive: The soil in this part of the world is not rich enough to sustain a large population.
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sustain verb [T] (SUFFER)

formal to suffer or experience, especially damage or loss: She sustained multiple injuries in the accident. Most buildings sustained only minimal damage in the earthquake. The company has sustained heavy losses this year.

sustain verb [T] (SUPPORT)

to support emotionally: She was sustained by the strength of her religious faith. The love of my family and friends sustained me through my ordeal.
(Definition of sustain from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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