Declension table of ?gardhayiṣyat

Masculine	Singular	Dual	Plural
Nominative	gardhayiṣyan	gardhayiṣyantau	gardhayiṣyantaḥ
Vocative	gardhayiṣyan	gardhayiṣyantau	gardhayiṣyantaḥ
Accusative	gardhayiṣyantam	gardhayiṣyantau	gardhayiṣyataḥ
Instrumental	gardhayiṣyatā	gardhayiṣyadbhyām	gardhayiṣyadbhiḥ
Dative	gardhayiṣyate	gardhayiṣyadbhyām	gardhayiṣyadbhyaḥ
Ablative	gardhayiṣyataḥ	gardhayiṣyadbhyām	gardhayiṣyadbhyaḥ
Genitive	gardhayiṣyataḥ	gardhayiṣyatoḥ	gardhayiṣyatām
Locative	gardhayiṣyati	gardhayiṣyatoḥ	gardhayiṣyatsu

Compound gardhayiṣyat -

Adverb -gardhayiṣyantam