Declension table of ?atharvāṅgirasa

Masculine	Singular	Dual	Plural
Nominative	atharvāṅgirasaḥ	atharvāṅgirasau	atharvāṅgirasāḥ
Vocative	atharvāṅgirasa	atharvāṅgirasau	atharvāṅgirasāḥ
Accusative	atharvāṅgirasam	atharvāṅgirasau	atharvāṅgirasān
Instrumental	atharvāṅgirasena	atharvāṅgirasābhyām	atharvāṅgirasaiḥ atharvāṅgirasebhiḥ
Dative	atharvāṅgirasāya	atharvāṅgirasābhyām	atharvāṅgirasebhyaḥ
Ablative	atharvāṅgirasāt	atharvāṅgirasābhyām	atharvāṅgirasebhyaḥ
Genitive	atharvāṅgirasasya	atharvāṅgirasayoḥ	atharvāṅgirasānām
Locative	atharvāṅgirase	atharvāṅgirasayoḥ	atharvāṅgiraseṣu

Compound atharvāṅgirasa -

Adverb -atharvāṅgirasam -atharvāṅgirasāt