Here are some other words for terrestrial, depending on the context:

General:

* Earthly

* Land-based

* Ground-dwelling

* Non-aquatic

* Continental

More specific:

* Subaerial (referring to things on the land surface)

* Edaphic (relating to the soil)

* Geomorphic (relating to the earth's surface features)

When referring to planets:

* Planetary (referring to a planet)

* Worldly

The best choice will depend on the specific meaning you're trying to convey.