Unadventurous (adjective)

Not inclined to take risks or try new things; conservative; cautious.

Origin:

Un- + adventurous.

Examples:

1. He had an unadventurous personality and never tried new things.
2. She was unadventurous in her choice of food and always ordered the same dish.
3. The unadventurous traveler stuck to well-trodden paths.
4. Their unadventurous approach to life kept them from experiencing new things.
5. He had an unadventurous attitude towards his job and never took any risks.