Declension table of ?rathāntara

Neuter	Singular	Dual	Plural
Nominative	rathāntaram	rathāntare	rathāntarāṇi
Vocative	rathāntara	rathāntare	rathāntarāṇi
Accusative	rathāntaram	rathāntare	rathāntarāṇi
Instrumental	rathāntareṇa	rathāntarābhyām	rathāntaraiḥ
Dative	rathāntarāya	rathāntarābhyām	rathāntarebhyaḥ
Ablative	rathāntarāt	rathāntarābhyām	rathāntarebhyaḥ
Genitive	rathāntarasya	rathāntarayoḥ	rathāntarāṇām
Locative	rathāntare	rathāntarayoḥ	rathāntareṣu

Compound rathāntara -

Adverb -rathāntaram -rathāntarāt