Declension table of ?gardhya

Neuter	Singular	Dual	Plural
Nominative	gardhyam	gardhye	gardhyāni
Vocative	gardhya	gardhye	gardhyāni
Accusative	gardhyam	gardhye	gardhyāni
Instrumental	gardhyena	gardhyābhyām	gardhyaiḥ
Dative	gardhyāya	gardhyābhyām	gardhyebhyaḥ
Ablative	gardhyāt	gardhyābhyām	gardhyebhyaḥ
Genitive	gardhyasya	gardhyayoḥ	gardhyānām
Locative	gardhye	gardhyayoḥ	gardhyeṣu

Compound gardhya -

Adverb -gardhyam -gardhyāt