Reliant (adjective)

1. Depending on something or someone for support or aid.
2. Likely to depend on something or someone for support or aid.

Origin:

Late middle english (in the sense "relying on another"): from old french reliant, present participle of relier "to rely on".

Examples:

1. The company became too reliant on a single product for its revenue.
2. She was very reliant on her parents for financial support.
3. The city is overly reliant on tourism as an economic driver.
4. The small business is heavily reliant on local customers.
5. He is too reliant on technology and struggles when it's not available.