"A warehouse of facts, with poet and ___ in joint ownership" ("The Devil's Dictionary" definition for "imagination") (4)

I believe the answer is:

liar

(Other definitions for liar that I've seen before include "One telling untruths" , "not straight [one]" , "Not a truth-sayer!" , "Untruthful person (Billy in Schlesinger film)" , "Person regularly 'economical with the truth'" .)

I've seen this clue in The New York Times.

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