Declension table of ?gumphitavya

Neuter	Singular	Dual	Plural
Nominative	gumphitavyam	gumphitavye	gumphitavyāni
Vocative	gumphitavya	gumphitavye	gumphitavyāni
Accusative	gumphitavyam	gumphitavye	gumphitavyāni
Instrumental	gumphitavyena	gumphitavyābhyām	gumphitavyaiḥ
Dative	gumphitavyāya	gumphitavyābhyām	gumphitavyebhyaḥ
Ablative	gumphitavyāt	gumphitavyābhyām	gumphitavyebhyaḥ
Genitive	gumphitavyasya	gumphitavyayoḥ	gumphitavyānām
Locative	gumphitavye	gumphitavyayoḥ	gumphitavyeṣu

Compound gumphitavya -

Adverb -gumphitavyam -gumphitavyāt