Declension table of ?āpsara

Neuter	Singular	Dual	Plural
Nominative	āpsaram	āpsare	āpsarāṇi
Vocative	āpsara	āpsare	āpsarāṇi
Accusative	āpsaram	āpsare	āpsarāṇi
Instrumental	āpsareṇa	āpsarābhyām	āpsaraiḥ
Dative	āpsarāya	āpsarābhyām	āpsarebhyaḥ
Ablative	āpsarāt	āpsarābhyām	āpsarebhyaḥ
Genitive	āpsarasya	āpsarayoḥ	āpsarāṇām
Locative	āpsare	āpsarayoḥ	āpsareṣu

Compound āpsara -

Adverb -āpsaram -āpsarāt