The group possibly met weekly, or as required by circumstances.

For the manner of it he must profit by such circumstances as should offer themselves.

"This is a new rule, decided a few days ago and invented by circumstances."

"And you believe that his death was either accidental or justified by circumstances?"

A hard man, but made that way by circumstances.

This new incarnation of Yes came about by circumstance rather than design.

It was a decision made necessary by circumstance, and one I tolerate, but do not enjoy.

Potential agricultural benefits would vary by local circumstance but might show up within 25 years.

I went in persuaded by circumstance and evidence of his guilt.

Bond suspected, was able to apply pressure when required by circumstances such as these.