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English definition of “sustain”

sustain

verb [T]     /səˈsteɪn/
to make or allow something to continue for a period of time : The board accepted that the growth rates could not be sustained indefinitely .
to experience loss , injury , or damage : As a result of the oil spill , BP sustained heavy losses . The port sustained severe damage in the storm .
to provide support for an idea , statement , legal argument , etc.: The data meant the government could not sustain its argument that lower duty on fuel would lead to lower spending on schools and hospitals . Only in one case could the auditors find evidence to sustain a claim of criminal behaviour .
(Definition of sustain verb from the Cambridge Business English Dictionary © Cambridge University Press)
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