Beseech, beg (5)
I believe the answer is:
plead
This clue is a double definition.
'beseech' is the first definition.
(I've seen this in another clue)
'beg' is the second definition.
(I've seen this before)
(Other definitions for plead that I've seen before include "Make an emotional appeal" , "Say one is guilty or not guilty" , "Appeal humbly (to)" , "Sue" , "Beg or petition" .)