Declension table of ?kauśya

Neuter	Singular	Dual	Plural
Nominative	kauśyam	kauśye	kauśyāni
Vocative	kauśya	kauśye	kauśyāni
Accusative	kauśyam	kauśye	kauśyāni
Instrumental	kauśyena	kauśyābhyām	kauśyaiḥ
Dative	kauśyāya	kauśyābhyām	kauśyebhyaḥ
Ablative	kauśyāt	kauśyābhyām	kauśyebhyaḥ
Genitive	kauśyasya	kauśyayoḥ	kauśyānām
Locative	kauśye	kauśyayoḥ	kauśyeṣu

Compound kauśya -

Adverb -kauśyam -kauśyāt