The guy's interest was aroused, despite the natural caution.

Well, call it my natural caution at work.

The natural caution that is inherent to all creatures of the wild had deserted him.

Another time he encountered a very fine path going right his way, so fine that natural caution made him avoid it.

Therefore I have to bring my natural caution to a new pitch.

No invisible force like the want of an invitation was keeping me outside, only natural caution.

It was just her conscience and natural caution holding her back.

The drug, although eradicating fear, also had the effect of removing enthusiasm and natural caution.

It was an advantage really: although the men would be without fear, they would also lack natural caution.

Only a natural caution stopped her from calling out Rosamund's name.