Declension table of ?svāvaśya

Neuter	Singular	Dual	Plural
Nominative	svāvaśyam	svāvaśye	svāvaśyāni
Vocative	svāvaśya	svāvaśye	svāvaśyāni
Accusative	svāvaśyam	svāvaśye	svāvaśyāni
Instrumental	svāvaśyena	svāvaśyābhyām	svāvaśyaiḥ
Dative	svāvaśyāya	svāvaśyābhyām	svāvaśyebhyaḥ
Ablative	svāvaśyāt	svāvaśyābhyām	svāvaśyebhyaḥ
Genitive	svāvaśyasya	svāvaśyayoḥ	svāvaśyānām
Locative	svāvaśye	svāvaśyayoḥ	svāvaśyeṣu

Compound svāvaśya -

Adverb -svāvaśyam -svāvaśyāt