cau ‧ tious /ˈkɔːʃəs $ ˈkɒː-/ BrE AmE adjective
careful to avoid danger or risks ⇨ caution :
a cautious driver
a cautious approach to the crisis
The air-pollution board has reacted with cautious optimism to the announcement.
cautious about (doing) something
Keller is cautious about making predictions for the success of the program.
—cautiously adverb :
The government responded cautiously to the move.
—cautiousness noun [uncountable]