Superlative form of distinct; the most clearly different, recognizable, or separate of all things being compared.
From distinct + -est superlative suffix. This is the highest degree of the quality of being distinct or separate.
Using '-est' superlatives like 'distinctest' is becoming rare—we now prefer 'most distinct'—but old literature is full of these single-word superlatives that sound poetic to modern ears!
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