Declension table of ?tigdha

Neuter	Singular	Dual	Plural
Nominative	tigdham	tigdhe	tigdhāni
Vocative	tigdha	tigdhe	tigdhāni
Accusative	tigdham	tigdhe	tigdhāni
Instrumental	tigdhena	tigdhābhyām	tigdhaiḥ
Dative	tigdhāya	tigdhābhyām	tigdhebhyaḥ
Ablative	tigdhāt	tigdhābhyām	tigdhebhyaḥ
Genitive	tigdhasya	tigdhayoḥ	tigdhānām
Locative	tigdhe	tigdhayoḥ	tigdheṣu

Compound tigdha -

Adverb -tigdham -tigdhāt