"Might one inquire as to your specific field of endeavor?"

Here was a fellow who abandoned fields of endeavor before others even knew they existed.

Therefore, this is a field of human endeavor that has not been staked out.

But every field of human endeavor had its rules, and these were just different ones.

He is traveling with me, but his is quite a different field of endeavor.

In its pages could be found reports from many fields of human endeavor.

Her ship was named after a man who had achieved excellence in almost every field of endeavor available to him.

What started with glowing bacteria has become a major field of endeavor.

A golden age is a period in a field of endeavor when great tasks were accomplished.

In all fields of endeavor, many wish to run before they can walk.