Declension table of ?tīkṣṇatva

Neuter	Singular	Dual	Plural
Nominative	tīkṣṇatvam	tīkṣṇatve	tīkṣṇatvāni
Vocative	tīkṣṇatva	tīkṣṇatve	tīkṣṇatvāni
Accusative	tīkṣṇatvam	tīkṣṇatve	tīkṣṇatvāni
Instrumental	tīkṣṇatvena	tīkṣṇatvābhyām	tīkṣṇatvaiḥ
Dative	tīkṣṇatvāya	tīkṣṇatvābhyām	tīkṣṇatvebhyaḥ
Ablative	tīkṣṇatvāt	tīkṣṇatvābhyām	tīkṣṇatvebhyaḥ
Genitive	tīkṣṇatvasya	tīkṣṇatvayoḥ	tīkṣṇatvānām
Locative	tīkṣṇatve	tīkṣṇatvayoḥ	tīkṣṇatveṣu

Compound tīkṣṇatva -

Adverb -tīkṣṇatvam -tīkṣṇatvāt