Latin Demonstrative Pronouns

The Declension of Hic, Ille, Iste and Is

Main Entrance to the Père Lachaise Cemetery, in Paris, engraved with the words
Main Entrance to the Père Lachaise Cemetery, in Paris, engraved with the words "SPES•ILLORUM / IMMORTALITATE / PLENA•EST Sapient III IV" and "QUICREDIT IN ME / ETIAM SI MORTUUS / FUERIT VIVET Jean XI". Coyau / Wikimedia Commons, via Wikimedia Commons

For information on the types of pronouns, see Latin Grammar Tips.

Demonstratives point things out.

Demonstrative Adjectives vs Pronouns

Demonstrative pronouns can stand alone -- like nouns, but demonstrative adjectives can't. The forms are the same for the Latin demonstratie pronouns and adjectives, but a demonstrative adjective needs a noun to go with it. Hic means 'this' when used as a demonstrative pronoun; ille and iste mean 'that'.

Hic, as a demonstrative adjective, still means 'this'; ille and iste still mean 'that.' Is is a fourth, weaker demonstrative, also called the determinative.

This - Hic Haec Hoc

There is a rule that Latin neuter nouns end in "-a" in the nominative and accusative plural. Like most rules, there are exceptions. Here you'll find one such.
 Singular Plural
nom.hichaechoc hihaehaec
gen.huiushuiushuius horumharumhorum
dat.huichuichuic hishishis
acc.hunchanchoc hoshashaec
abl.hochachoc hishishis

That - Ille Illa Illud

 Singular Plural
nom.illeillaillud illiillaeilla
gen.illiusilliusillius illorumillarumillorum
dat.illiilliilli illisillisillis
acc.illumillamillud illosillasilla
abl.illoillaillo illisillisillis

That (contemptuously) Iste Ista Istud

 Singular Plural
nom.isteistaistud istiistaeista
gen.istiusistiusistius istorumistarumistorum
dat.istiistiisti istisistisistis
acc.istumistamistud istosistasista
abl.istoistaisto istisistisistis

This, that (weak), he, she, it Is Ea Id

 Singular Plural
nom.iseaid ei(ii)eaeea
gen.eiuseiuseius eorumearumeorum
dat.eieiei eiseiseis
acc.eumeamid eoseasea
abl.eoeaeo eiseiseis