Declension table of ?sidhra

Neuter	Singular	Dual	Plural
Nominative	sidhram	sidhre	sidhrāṇi
Vocative	sidhra	sidhre	sidhrāṇi
Accusative	sidhram	sidhre	sidhrāṇi
Instrumental	sidhreṇa	sidhrābhyām	sidhraiḥ
Dative	sidhrāya	sidhrābhyām	sidhrebhyaḥ
Ablative	sidhrāt	sidhrābhyām	sidhrebhyaḥ
Genitive	sidhrasya	sidhrayoḥ	sidhrāṇām
Locative	sidhre	sidhrayoḥ	sidhreṣu

Compound sidhra -

Adverb -sidhram -sidhrāt