Declension table of ?śardhana

Neuter	Singular	Dual	Plural
Nominative	śardhanam	śardhane	śardhanāni
Vocative	śardhana	śardhane	śardhanāni
Accusative	śardhanam	śardhane	śardhanāni
Instrumental	śardhanena	śardhanābhyām	śardhanaiḥ
Dative	śardhanāya	śardhanābhyām	śardhanebhyaḥ
Ablative	śardhanāt	śardhanābhyām	śardhanebhyaḥ
Genitive	śardhanasya	śardhanayoḥ	śardhanānām
Locative	śardhane	śardhanayoḥ	śardhaneṣu

Compound śardhana -

Adverb -śardhanam -śardhanāt