Declension table of ?naṣṭasaṃsmṛti

Masculine	Singular	Dual	Plural
Nominative	naṣṭasaṃsmṛtiḥ	naṣṭasaṃsmṛtī	naṣṭasaṃsmṛtayaḥ
Vocative	naṣṭasaṃsmṛte	naṣṭasaṃsmṛtī	naṣṭasaṃsmṛtayaḥ
Accusative	naṣṭasaṃsmṛtim	naṣṭasaṃsmṛtī	naṣṭasaṃsmṛtīn
Instrumental	naṣṭasaṃsmṛtinā	naṣṭasaṃsmṛtibhyām	naṣṭasaṃsmṛtibhiḥ
Dative	naṣṭasaṃsmṛtaye	naṣṭasaṃsmṛtibhyām	naṣṭasaṃsmṛtibhyaḥ
Ablative	naṣṭasaṃsmṛteḥ	naṣṭasaṃsmṛtibhyām	naṣṭasaṃsmṛtibhyaḥ
Genitive	naṣṭasaṃsmṛteḥ	naṣṭasaṃsmṛtyoḥ	naṣṭasaṃsmṛtīnām
Locative	naṣṭasaṃsmṛtau	naṣṭasaṃsmṛtyoḥ	naṣṭasaṃsmṛtiṣu

Compound naṣṭasaṃsmṛti -

Adverb -naṣṭasaṃsmṛti