inveterate
Definition
Having a particular habit, activity, or interest that is long-established and unlikely to change.
हिन्दी एक विशेष आदत, गतिविधि या रुचि जो लंबे समय से स्थापित है और बदलने की संभावना नहीं है।
Example
"He is an inveterate gambler who has visited casinos since his youth."