According to the Harper's English Grammar, there are
four demonstrative pronouns in the English language: this, that, these, and
those; however, according to the Concise Oxford Dictionary, there are five ?
what is the fifth one?
Etymology, Etymology, and more Etymology
as well as grammar, usage, euphemism, slang, jargon, semantics (meaning), linguistics, neologism, idiom, word origin, syntax, dialect, lexicon (vocabulary), diction, pidgin, synonym, antonym, homonym, cant, argot, lingo, and redundancy.

The critically-acclaimed board game
MooT
consists of tough questions about the nuances of the English language.
Answer:
such
A demonstrative pronoun is a pronoun that designates or
points out something; for example: "Such are my beliefs." Some claim that
English has seven of them: the aforementioned five, plus yon and yonder, as in:
"Yon (or yonder) cow is a bull."
Please note that these are draft questions for the board game MooT.
If you spot an error or disagree with anything I've said here,
please let me know and I'll fix it.
(the Mootguy)
Feedback
(1) The New Shorter OED (on CD-ROM) has this
entry for THEY:"Demonstrative: those (chiefly as antecedent). arch. ME."
Admittedly, it does class it as archaic, though.
x-johnpf_lineone.net
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(2) If one speaks of "yon/yonder" cow, why is yon/yonder not an
adjective? Demonstrative pronouns are NOT adjectives, obviously, when used as
subjects in "demonstrative" sentences. When in conjunction with, and directly
preceding a substantive/noun, they are technically
adjectives.
x-bkellam_berkshireschool.org
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(3) But in the sentence
"Yon cow is a bull," wouldn't "yon" be acting as an adjective rather than a
pronoun? Still, your point works, because we could say "Yon is a bull" and mean
"yon" to refer to the THING (tho most often it might replace "there,"
instead).
x-sawrugby_hotmail.com
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(4) How about "themthar" as in "there's gold in them thar hills" ?
Also" that there" and "this here" as in "that there fella can't hit nothin' in
this here league" ?(Casey Stengel). I could go on but perhaps had better
not.
x-ahanfor1_rochester.rr.com
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(5) The comments about
"yon/yonder" acting as an adjective are true ? except for the fact that every
pronoun in the possessive case is adjectival ? "my book," their socks," the cat
is mine" ? and yet they are called "pronouns" in English nomenclature. In my
Department's grammar classes, students must call such words "PPPCFA" when
identifying the parts of speech ? "Personal Pronoun, Possessive Case,
Functioning Adjectivally"! A mouthful, but one that reveals to them the
inconsistency of the name and the fluid, evolving nature of language.
x-oneoak_earthlink.net
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