na-adjective, noun which may take the genitive case particle 'no', taru-adjective, adverb taking the 'to' particle, noun
unchanged; stuck in old ways; none the better for change
Describes a situation, system, or person that remains exactly as before, often with a negative nuance of being outdated or resistant to improvement. Used as a な-adjective, の-adjective, or adverbially with と.
会社の体質は旧態依然としている。
The company's culture remains unchanged (stuck in old ways).
If we stick to the old ways, we'll be left behind by the times.