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How does the noun influence the inflection (changed ending) of the adjective?
Quid est - A Latin adjective always agrees with the noun or pronoun it modifies in case (Nom., Gen., Dat., Acc., Abl., Voc.), number (sing. or pl.) and gender (masc., fem., or neuter). The endings WILL NOT be mirror image; it depends on the declension of the noun & adjective pairings.