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A synonym to of which and likewise an inanimate alternative to whose, the possessive of who. Whereas "whose" is defined to be the possessive of both "who" and "which", there is a hesitation to use "whose" with an inanimate antecedent, and so the word "which's" is beginning to be used instead.
"If the previous request (which's response was generated by the jsp) set a cookie on the client"

"A game for all four contestants, one of which reviews a film, which's title is selected by the audience. The other three act out the film described by the reviewer."
by Weston Ruter August 31, 2005
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Jul 5 Word of the Day
"I'll be back from vacation soon. How are my fish doing?"
"Yeah, about that... 😅"

"He went to choke the chicken..."
"But that's animal abuse! How are you guys okay with this?!"
"I don't think that's what he meant by that 😅"
by wasabiMP July 08, 2016
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2
"Which?" is used by some English speakers, e.g. on Dublin's north side, when they meant to say "Sorry, I didn't understand what you just said."
Gilbert: Please hold your orthorexic lessons while I'm eating!
Michael: Which?
by Dietrich September 02, 2006
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