Declension table of tantrin

Neuter	Singular	Dual	Plural
Nominative	tantri	tantriṇī	tantrīṇi
Vocative	tantrin tantri	tantriṇī	tantrīṇi
Accusative	tantri	tantriṇī	tantrīṇi
Instrumental	tantriṇā	tantribhyām	tantribhiḥ
Dative	tantriṇe	tantribhyām	tantribhyaḥ
Ablative	tantriṇaḥ	tantribhyām	tantribhyaḥ
Genitive	tantriṇaḥ	tantriṇoḥ	tantriṇām
Locative	tantriṇi	tantriṇoḥ	tantriṣu

Compound tantri -

Adverb -tantri