33 ACROSS:- SURROUNDED, F?A?K?D, I am thinking it could be FLANKED but I have put it in a number of crossword solvers and it doesn't come up with this answer.
44 DOWN:- BODY PART, ?O?E?R?, Could the answer be FOREARM?
I note the linked merriam-webster dictionary site doesn't include surrounded as one of the synonyms for flanked, although it gets close with bordered(on).
The "visit the thesaurus for more" link therein however does include surround under "words related to". You have to do this sort of link-hopping sometimes when working on crosswords.