Declension table of niś

Feminine	Singular	Dual	Plural
Nominative
Vocative
Accusative			niśaḥ
Instrumental	niśā	niḍbhyām	niḍbhiḥ
Dative	niśe	niḍbhyām	niḍbhyaḥ
Ablative	niśaḥ	niḍbhyām	niḍbhyaḥ
Genitive	niśaḥ	niśoḥ	niśām
Locative	niśi	niśoḥ	niṭsu

Compound niṭ -

Adverb -niṭ