Willing to help others and ready to do favors; friendly and cooperative in nature.
From 'oblige,' which comes from French 'obliger' and Latin 'obligare' (literally 'to bind'). The idea is that doing a favor creates a kind of bond between people.
When you do something obliging for someone, you're creating what anthropologists call 'social reciprocity'—they're now likely to help you back because you helped them, which is why most human societies survive through these networks of mutual obligation.
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