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strand n., shore. My brother and I sat upon the strand and watched the waves roll in.

trem • u • lous adj., trembling. The leaves in the willow tree were tremulous in the light breeze.

tur • bid adj., muddled. Never drink from a turbid stream.

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cer • ti • tude n., absolute sureness. With certitude I raised my hand and strode to the chalkboard to work the arithmetic problem.