The quality or state of being contributive; the tendency or capacity to contribute to something.
From contributive + -ness (the quality of), transforming an adjective into an abstract noun. The suffix -ness creates a noun describing the characteristic of being contributive.
Phrenologists once tried to locate a 'contributiveness' bump on the skull—they believed generosity was literally a part of your brain shape, showing how wrong science can be.
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