There is not only a definite article in Elfish, but also an indefinite article, used to denote non-specific occurences of a thing. It exists in singular and plural, but not in collective (which would not make sense) and not for the vocative case.
In nominative and accusative, the forms of both masculine and feminine articles is just a simple clitizized सः s'. If a noun starts on a consonant that can form a valid consonant cluster with s (see phonology section), it will be done. If this is not possible, the fully-qualified indefinite articles सं sam INDEF.FEM.NOM, सें sem INDEF.MASC.NOM, सा sā INDEF.FEM.ACC and सो sē INDEF.MASC.ACC are used.
Feminine, demonstrated at the noun त्रिच trica - picture
sam trica - a picture [subject]
samu trici - of a picture
samur tricar - for a picture
sā trican - a picture [object]
samas trices - to a picture
sami tricari - away from a picture
samu tricayu - at a picture
Masculine, demonstrated at the noun फोये phēye - bee
sem phēye - a bee [subject]
semu phēyu - of a bee
sum phēyu - for a bee
sē phēye - a bee [object]
sama phēyarfīn - to a bee
sama phēyarūn - away from a bee
sama phēyar - at a bee
Plural, demonstrated at the noun क्रज़ kras - meadow, plural क्रव्वि kravi
sī kravi - meadows [subject]
sīme kravay - of meadows
sīte kravar - for meadows
sīn kraven - meadows [object]
sīyes kravim - to meadows
sīya kravil - away from meadows
sīyu kravir - on meadows