丈夫
じょうぶ healthy; robust
Why it means this
丈 (a full-grown man's height) + 夫 (a man) — originally a grown, able-bodied man; hence sturdy, robust, and hard-wearing (丈夫な体; 丈夫な靴; 大丈夫). Read じょうぶ.
Breakdown
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