Declension table of ?upaniṣkara

Masculine	Singular	Dual	Plural
Nominative	upaniṣkaraḥ	upaniṣkarau	upaniṣkarāḥ
Vocative	upaniṣkara	upaniṣkarau	upaniṣkarāḥ
Accusative	upaniṣkaram	upaniṣkarau	upaniṣkarān
Instrumental	upaniṣkareṇa	upaniṣkarābhyām	upaniṣkaraiḥ upaniṣkarebhiḥ
Dative	upaniṣkarāya	upaniṣkarābhyām	upaniṣkarebhyaḥ
Ablative	upaniṣkarāt	upaniṣkarābhyām	upaniṣkarebhyaḥ
Genitive	upaniṣkarasya	upaniṣkarayoḥ	upaniṣkarāṇām
Locative	upaniṣkare	upaniṣkarayoḥ	upaniṣkareṣu

Compound upaniṣkara -

Adverb -upaniṣkaram -upaniṣkarāt