Declension table of ?ātapana

Masculine	Singular	Dual	Plural
Nominative	ātapanaḥ	ātapanau	ātapanāḥ
Vocative	ātapana	ātapanau	ātapanāḥ
Accusative	ātapanam	ātapanau	ātapanān
Instrumental	ātapanena	ātapanābhyām	ātapanaiḥ ātapanebhiḥ
Dative	ātapanāya	ātapanābhyām	ātapanebhyaḥ
Ablative	ātapanāt	ātapanābhyām	ātapanebhyaḥ
Genitive	ātapanasya	ātapanayoḥ	ātapanānām
Locative	ātapane	ātapanayoḥ	ātapaneṣu

Compound ātapana -

Adverb -ātapanam -ātapanāt