half
adjective
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consisting of one of two equivalent parts in value or quantity
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partial
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(of siblings) related through one parent only“a half brother”
adverb
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partially or to the extent of a half“We were half hidden by the bushes.”
noun
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one of two equal parts of a divisible whole“half a loaf”one-half
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one of two divisions into which some games or performances are divided: the two divisions are separated by an interval