Thought of that but, like you, could not justify.
Pretty sure e is second last letter of 1a which would fit with shoulder. Also felt it had to begin with an s.
Anyone out there got an explanation?
Sorry I took so long to respond. Was distracted by the m&s advert! : )
I thought of emasculate but I couldn't figure out why. Also, emancipate - same problem. Thanks for your help.