Declension table of ?spaśayitavya

Neuter	Singular	Dual	Plural
Nominative	spaśayitavyam	spaśayitavye	spaśayitavyāni
Vocative	spaśayitavya	spaśayitavye	spaśayitavyāni
Accusative	spaśayitavyam	spaśayitavye	spaśayitavyāni
Instrumental	spaśayitavyena	spaśayitavyābhyām	spaśayitavyaiḥ
Dative	spaśayitavyāya	spaśayitavyābhyām	spaśayitavyebhyaḥ
Ablative	spaśayitavyāt	spaśayitavyābhyām	spaśayitavyebhyaḥ
Genitive	spaśayitavyasya	spaśayitavyayoḥ	spaśayitavyānām
Locative	spaśayitavye	spaśayitavyayoḥ	spaśayitavyeṣu

Compound spaśayitavya -

Adverb -spaśayitavyam -spaśayitavyāt