Declension table of adhyavasāna

Neuter	Singular	Dual	Plural
Nominative	adhyavasānam	adhyavasāne	adhyavasānāni
Vocative	adhyavasāna	adhyavasāne	adhyavasānāni
Accusative	adhyavasānam	adhyavasāne	adhyavasānāni
Instrumental	adhyavasānena	adhyavasānābhyām	adhyavasānaiḥ
Dative	adhyavasānāya	adhyavasānābhyām	adhyavasānebhyaḥ
Ablative	adhyavasānāt	adhyavasānābhyām	adhyavasānebhyaḥ
Genitive	adhyavasānasya	adhyavasānayoḥ	adhyavasānānām
Locative	adhyavasāne	adhyavasānayoḥ	adhyavasāneṣu

Compound adhyavasāna -

Adverb -adhyavasānam -adhyavasānāt