Superlative form of gangly; the most tall, thin, and awkwardly built or moving.
From 'gangly' plus the superlative suffix '-est.' This is the highest degree of the gangly quality—the most extreme awkwardness of build.
You'll find 'gangliest' in sports commentary and character descriptions—authors love using it for characters who are conspicuously tall and uncoordinated, like fictional basketball players or clumsy heroes.
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