Declension table of ?sūpya

Neuter	Singular	Dual	Plural
Nominative	sūpyam	sūpye	sūpyāni
Vocative	sūpya	sūpye	sūpyāni
Accusative	sūpyam	sūpye	sūpyāni
Instrumental	sūpyena	sūpyābhyām	sūpyaiḥ
Dative	sūpyāya	sūpyābhyām	sūpyebhyaḥ
Ablative	sūpyāt	sūpyābhyām	sūpyebhyaḥ
Genitive	sūpyasya	sūpyayoḥ	sūpyānām
Locative	sūpye	sūpyayoḥ	sūpyeṣu

Compound sūpya -

Adverb -sūpyam -sūpyāt