The quality of being suitable, relevant, or appropriate for a particular purpose or situation.
From apposite plus the -ness suffix, which creates an abstract noun. Apposite comes from Latin appositus, meaning placed near or applied appropriately.
The appositeness of a joke is what makes people laugh—it hits exactly the right moment and subject. This is why the same joke told at different times can either kill or totally bomb; timing and context matter for appositeness.
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