A neologism for “executioner” coined by Luinyelle posted on 2024-10-06 in the Vinyë Lambengolmor Discord Server (VLDS), based on ᴺQ. undav- “to convict”, so more literally “convictor”. Unfortunately, I cannot recommend this word since it is in conflict with the Silmarillion-as-published; see hrundav- for discussion.