verb
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to damage, injure or render useless; to spoil; to destroy.
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to mar or impair the enjoyment, quality or functioning of.
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to overindulge so as to cause to demand or expect too much.
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to make ceremonially unclean or to spoil morally.
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to put off or extinguish a burning lamp or fire.
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to avoid (something) from happening; to ward off.