Past tense of cooperate; worked together with others toward a shared goal.
From Latin 'co-' (together) plus 'operari' (to work), meaning 'to work together.' This entered English in the 1600s and became especially important during the Industrial and Information Ages.
The word 'cooperate' gave rise to 'cooperatives'—businesses owned by workers together—which were revolutionary because they challenged the idea that one boss should own everything and make all decisions!
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