Third-person singular simple present indicative form of modify.(verb)
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Use "modifies" in a sentence
"The point of the bill and of the law it modifies is not to expatriate people who kill."
"The problem with dropping, though, isn't that the noun it modifies is too far away."
"Wherever the word modifies a verb or an adjective or another adverb, an adverb should be used, and wherever the word, whatever its location in the sentence, modifies a noun or pronoun, an adjective should be used."