Declension table of ?rathānīka

Neuter	Singular	Dual	Plural
Nominative	rathānīkam	rathānīke	rathānīkāni
Vocative	rathānīka	rathānīke	rathānīkāni
Accusative	rathānīkam	rathānīke	rathānīkāni
Instrumental	rathānīkena	rathānīkābhyām	rathānīkaiḥ
Dative	rathānīkāya	rathānīkābhyām	rathānīkebhyaḥ
Ablative	rathānīkāt	rathānīkābhyām	rathānīkebhyaḥ
Genitive	rathānīkasya	rathānīkayoḥ	rathānīkānām
Locative	rathānīke	rathānīkayoḥ	rathānīkeṣu

Compound rathānīka -

Adverb -rathānīkam -rathānīkāt