Simple past tense and past participle of subserve.(verb)
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Use "subserved" in a sentence
"This ponderous coin subserved a purpose which our penny does to-day."
"I therefore thought that the interest of the service would be subserved by removing one whose growing indifference might render the best-laid plans inoperative."
"Each of these disorders have been found in otherwise cognitively normal individuals, suggesting that the lost capacities are subserved by functionally dissociable mechanisms."