Declension table of ?sannidha

Neuter	Singular	Dual	Plural
Nominative	sannidham	sannidhe	sannidhāni
Vocative	sannidha	sannidhe	sannidhāni
Accusative	sannidham	sannidhe	sannidhāni
Instrumental	sannidhena	sannidhābhyām	sannidhaiḥ
Dative	sannidhāya	sannidhābhyām	sannidhebhyaḥ
Ablative	sannidhāt	sannidhābhyām	sannidhebhyaḥ
Genitive	sannidhasya	sannidhayoḥ	sannidhānām
Locative	sannidhe	sannidhayoḥ	sannidheṣu

Compound sannidha -

Adverb -sannidham -sannidhāt