Declension table of ?mānthya

Neuter	Singular	Dual	Plural
Nominative	mānthyam	mānthye	mānthyāni
Vocative	mānthya	mānthye	mānthyāni
Accusative	mānthyam	mānthye	mānthyāni
Instrumental	mānthyena	mānthyābhyām	mānthyaiḥ
Dative	mānthyāya	mānthyābhyām	mānthyebhyaḥ
Ablative	mānthyāt	mānthyābhyām	mānthyebhyaḥ
Genitive	mānthyasya	mānthyayoḥ	mānthyānām
Locative	mānthye	mānthyayoḥ	mānthyeṣu

Compound mānthya -

Adverb -mānthyam -mānthyāt