Superlative form of empty; most empty or most void of contents.
From empty + -est (superlative suffix), derived from Old English -est, the oldest superlative marker in English, used to indicate the highest degree of a quality.
While emptiest is grammatically standard as the superlative of empty, people often say 'most empty' instead—a shift showing how modern English prefers analytic forms (most + adjective) over synthetic ones (adjective + -est) for some words.
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