Any tips to get the Shakespeare one, 23d? I have worked on three Macbeths in my theatre career!
I'm assuming it actually has more than 7 letters and ends in -less.
But an anagram of silence, S and N doesn't seem to work.
Quite a tough puzzle, with a couple of clues that I kicked myself over once I realised the answers. The 6-word title might have defeated me without the internet, but the finished grid was great.