Declension table of ?granthavistara

Masculine	Singular	Dual	Plural
Nominative	granthavistaraḥ	granthavistarau	granthavistarāḥ
Vocative	granthavistara	granthavistarau	granthavistarāḥ
Accusative	granthavistaram	granthavistarau	granthavistarān
Instrumental	granthavistareṇa	granthavistarābhyām	granthavistaraiḥ granthavistarebhiḥ
Dative	granthavistarāya	granthavistarābhyām	granthavistarebhyaḥ
Ablative	granthavistarāt	granthavistarābhyām	granthavistarebhyaḥ
Genitive	granthavistarasya	granthavistarayoḥ	granthavistarāṇām
Locative	granthavistare	granthavistarayoḥ	granthavistareṣu

Compound granthavistara -

Adverb -granthavistaram -granthavistarāt