"Have you no shame?" in Sindarin

Hello, I'm wondering if someone can translate "Have you no shame?" into Sindarin. I've tried looking up the words by themselves and putting them into a sentence but I am honestly a bit stupid and I do not understand how this works ^^'

I know I used to do that with Japanese when I was younger and that is not how it works haha Thanks in advance.

I'm at a bit of a loss with this one, actually. There are Quenya words for "shame" in Tolkien's early materials, but their root later has to do with grief and anguish, so I think that's a dead end.

I'm tempted to try something figurative like Le/ci alchun? "Are you (formal/informal) unbowed?" But I'm by no means confident in that. Please wait for a Sindarin expert's opinion before committing to anything permanent!