Declension table of ?samāgantavya

Neuter	Singular	Dual	Plural
Nominative	samāgantavyam	samāgantavye	samāgantavyāni
Vocative	samāgantavya	samāgantavye	samāgantavyāni
Accusative	samāgantavyam	samāgantavye	samāgantavyāni
Instrumental	samāgantavyena	samāgantavyābhyām	samāgantavyaiḥ
Dative	samāgantavyāya	samāgantavyābhyām	samāgantavyebhyaḥ
Ablative	samāgantavyāt	samāgantavyābhyām	samāgantavyebhyaḥ
Genitive	samāgantavyasya	samāgantavyayoḥ	samāgantavyānām
Locative	samāgantavye	samāgantavyayoḥ	samāgantavyeṣu

Compound samāgantavya -

Adverb -samāgantavyam -samāgantavyāt