backdrop
/ˈbæk.dɹɒp/noun
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A decorated cloth hung at the back of a stage.
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An image that serves as a visual background.
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The setting or background of an acted performance.
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Any background situation.
"Against a backdrop of falling interest rates, the new savings account is looking less appealing."
verb
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To serve as a backdrop for.
"a brilliant sunset backdropping the famous skyline"