Latin Demonstrative Pronouns

The demonstratives hic, ille and iste

These are used both as pronouns which act as slightly emphatic versions of  the English third person personal pronouns and as adjectives corresponding roughly to English this and that.  Frequently in later Latin, and occasionally in Classical Latin, they also function as a definite article.
  1. hic, haec, hoc. dem. adj. this.  pnn. he (emph.), this.

  2.  
    Singular Plural
    Masc. Fem. Neut. Masc. Fem. Neut.
    Nom. hic haec hoc hi hae haec
    Gen. huius huius huius horum harum horum
    Dat. huic huic huic his his his
    Acc. hunc hanc hoc hos has haec
    Abl. hoc hac hoc his his his
    The demonstrative pronoun hic, haec, hoc is declined like a first and second declension adjective with the following peculiarities:  
  3. ille, illa, illud. dem. adj. that.  pnn., he (emph.), that.

  4.  
    Singular Plural
    Masc. Fem. Neut. Masc. Fem. Neut.
    Nom. ille illa illud illi illae illa
    Gen. illius illius illius illorum illarum illorum
    Dat. illi illi illi illis illis illis
    Acc. illum illam illud illos illas illa
    Abl. illo illa illo illis illis illis
     
    These are the antecedents of the French definite articles le, la.

    The demonstrative pronoun ille, illa, illud is declined like a first and second declension adjective except for irregularities in the nominative, genitive and dative singular.
     

  5. iste, ista, istud. dem. adj.  that [indicating contempt or anger.]  pnn. he(emph.).

  6.  
    Singular Plural
    Masc. Fem. Neut. Masc. Fem. Neut.
    Nom. iste ista istud isti istae ista
    Gen. istius istius istius istorum istarum istorum
    Dat. isti isti isti istis istis istis
    Acc. istum istam istud istos istas ista
    Abl. isto ista isto istis istis istis

    The demonstrative pronoun iste, ista, istud is declined like ille, illa, illud.

The demonstrative idem

idem, eadem, idem.  dem. adj./pnn. the same.
 
Singular Plural
Masc. Fem. Neut. Masc. Fem. Neut.
Nom. idem eadem idem eidem eaedem eadem
Gen. eiusdem eiusdem eiusdem eorundem earundem eorundem
Dat. eidem eidem eidem eisdem eisdem eisdem
Acc. eundem eandem idem eosdem easdem eadem
Abl. eodem eadem eodem eisdem eisdem eisdem

The suffix -dem is indeclinable.  These are declined like is, ea, id, the third personal pronouns.  Some of the endings shift before the suffix, in particular -md- becomes -nd-.

The emphatic pronoun ipse

ipse, -a, -um. emph., oneself.

The emphatic pronoun ipse is declined like ille.

It's meaning is not reflexive, but emphatic.  The following examples highlight the difference:

The heteroclite endings

The ending -ius in the genitive singular and the ending -i in the dative singular are called heteroclite endings.  They also appear as endings for a handful of first and second declension adjectives which are sometimes also used as pronouns.  These adjectives include:
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Last updated: Monday, 15 September, 1997.