The term 'proposal killers' refers to people who are opposed to a particular proposal or idea. They may be individuals, groups, or organizations that are actively working to prevent the proposal from being accepted or implemented. NOES (4 letters) is an acronym for 'NO Objection, Exceptional Support, ' which is a way of expressing opposition to a proposal without actually saying 'NO.' This type of opposition is often used when someone wants to express their disagreement without completely shutting down the conversation.