404meanings Quiddity vs Haecceity CompareCite Share
Quiddity vs Haecceity The short answer
Quiddity is what KIND of thing it is — the essence it shares with everything else of its type. Haecceity is that it is THIS one and no other — the thisness that no duplicate could copy. Two medieval terms for two genuinely different questions.
Last updated 16 Sept 2026 · 4 differences
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01 Side by side02 Which you meant03 Both in full01 Side by side 02 Which you meant 03 Both in full
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Comparison sheet
Quiddity vs Haecceity
Aspect Quiddity Haecceity Answers What is it? Which one is it? Shared with others Yes No Latin root quid, 'what' haec, 'this' Survives a copy Yes No
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In short Readers who land here meaning Quiddity rather than Haecceity are usually searching for phrases like “what does quiddity mean”, “word for the essence of a thing”, “quiddity vs haecceity”.
Quiddity “what does quiddity mean” “word for the essence of a thing” “quiddity vs haecceity” “whatness philosophy”