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if need be
Definition of if need be
: if something becomes necessary You can always call me at home if need be. We'll leave without them if need be.
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needplay
: necessary duty : obligation
: a lack of something requisite, desirable, or useful
: a physiological or psychological requirement for the well-being of an organism
: to be needful or necessary
: to be in want
: to be in need of : require
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