Declension table of ?ṛṣiṣṭuta

Neuter	Singular	Dual	Plural
Nominative	ṛṣiṣṭutam	ṛṣiṣṭute	ṛṣiṣṭutāni
Vocative	ṛṣiṣṭuta	ṛṣiṣṭute	ṛṣiṣṭutāni
Accusative	ṛṣiṣṭutam	ṛṣiṣṭute	ṛṣiṣṭutāni
Instrumental	ṛṣiṣṭutena	ṛṣiṣṭutābhyām	ṛṣiṣṭutaiḥ
Dative	ṛṣiṣṭutāya	ṛṣiṣṭutābhyām	ṛṣiṣṭutebhyaḥ
Ablative	ṛṣiṣṭutāt	ṛṣiṣṭutābhyām	ṛṣiṣṭutebhyaḥ
Genitive	ṛṣiṣṭutasya	ṛṣiṣṭutayoḥ	ṛṣiṣṭutānām
Locative	ṛṣiṣṭute	ṛṣiṣṭutayoḥ	ṛṣiṣṭuteṣu

Compound ṛṣiṣṭuta -

Adverb -ṛṣiṣṭutam -ṛṣiṣṭutāt