Declension table of ?nigha

Neuter	Singular	Dual	Plural
Nominative	nigham	nighe	nighāni
Vocative	nigha	nighe	nighāni
Accusative	nigham	nighe	nighāni
Instrumental	nighena	nighābhyām	nighaiḥ
Dative	nighāya	nighābhyām	nighebhyaḥ
Ablative	nighāt	nighābhyām	nighebhyaḥ
Genitive	nighasya	nighayoḥ	nighānām
Locative	nighe	nighayoḥ	nigheṣu

Compound nigha -

Adverb -nigham -nighāt