Declension table of ?ekādaśin

Masculine	Singular	Dual	Plural
Nominative	ekādaśī	ekādaśinau	ekādaśinaḥ
Vocative	ekādaśin	ekādaśinau	ekādaśinaḥ
Accusative	ekādaśinam	ekādaśinau	ekādaśinaḥ
Instrumental	ekādaśinā	ekādaśibhyām	ekādaśibhiḥ
Dative	ekādaśine	ekādaśibhyām	ekādaśibhyaḥ
Ablative	ekādaśinaḥ	ekādaśibhyām	ekādaśibhyaḥ
Genitive	ekādaśinaḥ	ekādaśinoḥ	ekādaśinām
Locative	ekādaśini	ekādaśinoḥ	ekādaśiṣu

Compound ekādaśi -

Adverb -ekādaśi