Can you use circumlocution to avoid answering a question?

Clever question with an obvious answer! The tactical purposes of circumlocution are to avoid answering a question. I.e., talking around a subject, without making or getting to a point would be a good way to avoid answering a question. However, because your question was categorized under Law & Legal Issues, you should be forewarned that a court or investigating department might have an issue with such a tactic, if used to avoid legal questions; and they might have --- or find --- reason to dock you for trying. Better advice: check with your attorney.