Declension table of ?śāntitavat

Masculine	Singular	Dual	Plural
Nominative	śāntitavān	śāntitavantau	śāntitavantaḥ
Vocative	śāntitavan	śāntitavantau	śāntitavantaḥ
Accusative	śāntitavantam	śāntitavantau	śāntitavataḥ
Instrumental	śāntitavatā	śāntitavadbhyām	śāntitavadbhiḥ
Dative	śāntitavate	śāntitavadbhyām	śāntitavadbhyaḥ
Ablative	śāntitavataḥ	śāntitavadbhyām	śāntitavadbhyaḥ
Genitive	śāntitavataḥ	śāntitavatoḥ	śāntitavatām
Locative	śāntitavati	śāntitavatoḥ	śāntitavatsu

Compound śāntitavat -

Adverb -śāntitavantam