The most intelligent or clever; the superlative form of 'brainy.'
Superlative form of 'brainy,' adding -est for the highest degree. From 'brain' + -y + -est. Reflects the standard English pattern for adjective comparison.
The superlative form—'brainiest'—often appears in science fiction and fantasy where extraordinary intelligence is rare and celebrated. It's interesting that we treat intelligence like it's a measureable, comparable trait, much like height.
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