Declension table of bhīṣma

Neuter	Singular	Dual	Plural
Nominative	bhīṣmam	bhīṣme	bhīṣmāṇi
Vocative	bhīṣma	bhīṣme	bhīṣmāṇi
Accusative	bhīṣmam	bhīṣme	bhīṣmāṇi
Instrumental	bhīṣmeṇa	bhīṣmābhyām	bhīṣmaiḥ
Dative	bhīṣmāya	bhīṣmābhyām	bhīṣmebhyaḥ
Ablative	bhīṣmāt	bhīṣmābhyām	bhīṣmebhyaḥ
Genitive	bhīṣmasya	bhīṣmayoḥ	bhīṣmāṇām
Locative	bhīṣme	bhīṣmayoḥ	bhīṣmeṣu

Compound bhīṣma -

Adverb -bhīṣmam -bhīṣmāt