I advised him to be cautious against his enemies.
He was cautious.
I always try to be cautious.
It was cautious of him to lock the door.
They’re cautious planners.
He made a cautious suggestion.
He is cautious of offending anybody.
I am quite cautious of his activities.
As he was cautious, he had less problem.
He is cautious in his business dealings.
He entreated them to be cautious.
Be cautious till you are out of the wood.