Declension table of ?nighnaka

Neuter	Singular	Dual	Plural
Nominative	nighnakam	nighnake	nighnakāni
Vocative	nighnaka	nighnake	nighnakāni
Accusative	nighnakam	nighnake	nighnakāni
Instrumental	nighnakena	nighnakābhyām	nighnakaiḥ
Dative	nighnakāya	nighnakābhyām	nighnakebhyaḥ
Ablative	nighnakāt	nighnakābhyām	nighnakebhyaḥ
Genitive	nighnakasya	nighnakayoḥ	nighnakānām
Locative	nighnake	nighnakayoḥ	nighnakeṣu

Compound nighnaka -

Adverb -nighnakam -nighnakāt