Declension table of ?sundaratara

Neuter	Singular	Dual	Plural
Nominative	sundarataram	sundaratare	sundaratarāṇi
Vocative	sundaratara	sundaratare	sundaratarāṇi
Accusative	sundarataram	sundaratare	sundaratarāṇi
Instrumental	sundaratareṇa	sundaratarābhyām	sundarataraiḥ
Dative	sundaratarāya	sundaratarābhyām	sundaratarebhyaḥ
Ablative	sundaratarāt	sundaratarābhyām	sundaratarebhyaḥ
Genitive	sundaratarasya	sundaratarayoḥ	sundaratarāṇām
Locative	sundaratare	sundaratarayoḥ	sundaratareṣu

Compound sundaratara -

Adverb -sundarataram -sundaratarāt