adventitious

The thought of these things is adventitious, changeable, and does not apply to permanent objects.

In all of these cases, the movement of displacement is identical, and presents only adventitious differences.

He wants all these adventitious excitements, but he has that within which is a greater excitement than all these.

And yet it is but an adventitious honour, which will soon fade, if it be not sustained by personal character and real excellence.

He was more so than Columbus, and rendered the adventitious career of the Genoese possible.