Declension table of ?samadhura

Neuter	Singular	Dual	Plural
Nominative	samadhuram	samadhure	samadhurāṇi
Vocative	samadhura	samadhure	samadhurāṇi
Accusative	samadhuram	samadhure	samadhurāṇi
Instrumental	samadhureṇa	samadhurābhyām	samadhuraiḥ
Dative	samadhurāya	samadhurābhyām	samadhurebhyaḥ
Ablative	samadhurāt	samadhurābhyām	samadhurebhyaḥ
Genitive	samadhurasya	samadhurayoḥ	samadhurāṇām
Locative	samadhure	samadhurayoḥ	samadhureṣu

Compound samadhura -

Adverb -samadhuram -samadhurāt