Declension table of ?dṛphat

Masculine	Singular	Dual	Plural
Nominative	dṛphan	dṛphantau	dṛphantaḥ
Vocative	dṛphan	dṛphantau	dṛphantaḥ
Accusative	dṛphantam	dṛphantau	dṛphataḥ
Instrumental	dṛphatā	dṛphadbhyām	dṛphadbhiḥ
Dative	dṛphate	dṛphadbhyām	dṛphadbhyaḥ
Ablative	dṛphataḥ	dṛphadbhyām	dṛphadbhyaḥ
Genitive	dṛphataḥ	dṛphatoḥ	dṛphatām
Locative	dṛphati	dṛphatoḥ	dṛphatsu

Compound dṛphat -

Adverb -dṛphantam