The suchness of being implies a previously existing being and quiddity.
Aristotle has thus shown how the Essence or quiddity (τί ἐστι) may become known in this class of cases.
The lawyer's clerk, whose name was quiddity, also set about publishing the whole of the matter abroad.
I think that he is right, and that the profitable study of a man is the study which regards him as an oddity, not a quiddity.
There you indeed appreciate the dead-alive city 'in all its quiddity.'
On the next interview Mr. Mumbles, delighted with the report of quiddity, addressed him with truly dignified solemnity.
Whatness and affections (quiddity) of being distinguishes between, ii.
a subtlety or quibbling point; triviality
Latin quid 'something' + -ity
"a trifling nicety in argument, a quibble," 1530s, from Medieval Latin quidditas "the essence of things," in Scholastic philosophy, "that which distinguishes a thing from other things," literally "whatness," from Latin quid "what," neuter of indefinite pronoun quis "somebody, someone or other" (see who). Sense developed from scholastic disputes over the nature of things. Original classical meaning "real essence or nature of a thing" is attested in English from late 14c.