Declension table of ?antarastha

Masculine	Singular	Dual	Plural
Nominative	antarasthaḥ	antarasthau	antarasthāḥ
Vocative	antarastha	antarasthau	antarasthāḥ
Accusative	antarastham	antarasthau	antarasthān
Instrumental	antarasthena	antarasthābhyām	antarasthaiḥ antarasthebhiḥ
Dative	antarasthāya	antarasthābhyām	antarasthebhyaḥ
Ablative	antarasthāt	antarasthābhyām	antarasthebhyaḥ
Genitive	antarasthasya	antarasthayoḥ	antarasthānām
Locative	antarasthe	antarasthayoḥ	antarastheṣu

Compound antarastha -

Adverb -antarastham -antarasthāt