Precautious is an adjective that means being careful by actively preparing to avoid something negative. It can refer to a person or an action. Precautious is very similar to cautious.

Is there such a word as precautious?

precautious, a. (prɪˈkɔːʃəs) [f. precaution: see -ous and cautious.] Using precaution; displaying previous or provident caution or care.

How do you use precautious?

Be sure to follow the usual safety precautions when cooking outdoors. When driving, she always wears her seatbelt as a precaution. Every home owner should take precautions against fire. She took the precaution of packing extra medicine for the trip.