Superlative form of clever: most clever.(adjective)
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Use "cleverest" in a sentence
"To Thyrsis this mockery came like a blast of fire in the face; he did not know that it was the regular method of the newspaper -- a method by means of which it had made itself known as the cleverest and most readable paper in the country."
"Minute differences between the races exist and the cleverest are the Eskimos ."
"He called the cleverest of his children, and bade it affix to his breech-cloth a plantain-leaf, dog's-tail-wise, and waggishly."