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Stage 1 of 3
robur
Latin · ancient
"oak, strength"
hard oak wood was the image of strength
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Stage 2 of 3
robuste
French · 1500s
"strong"
Latin 'robustus' literally meant oaken, from 'robur', a hard reddish oak wood, so 'as strong as oak'
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Stage 3 of 3
robust
English · 1540s
"strong"
used of wine and arguments
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