Ask humbly to avoid answering a question? (3)
I believe the answer is:
'ask humbly' is the definition.
(I've seen this before)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for beg that I've seen before include "Plead like mendicant" , "Earnestly entreat" , "Solicit charity" , "Plead or ask for alms" , "Get by any means - . . ., borrow or steal" .)