Declension table of ?trātavya

Neuter	Singular	Dual	Plural
Nominative	trātavyam	trātavye	trātavyāni
Vocative	trātavya	trātavye	trātavyāni
Accusative	trātavyam	trātavye	trātavyāni
Instrumental	trātavyena	trātavyābhyām	trātavyaiḥ
Dative	trātavyāya	trātavyābhyām	trātavyebhyaḥ
Ablative	trātavyāt	trātavyābhyām	trātavyebhyaḥ
Genitive	trātavyasya	trātavyayoḥ	trātavyānām
Locative	trātavye	trātavyayoḥ	trātavyeṣu

Compound trātavya -

Adverb -trātavyam -trātavyāt