Brass-neck is a term used to describe someone who is shamelessly audacious, often to the point of arrogance. Some synonyms for brass-neck include cheeky, bold, brazen, impudent, and presumptuous. These words suggest a disrespect for authority or social norms, and a disregard for the opinions or feelings of others. Other similar terms for brass-neck include bossy, pushy, and overbearing. While these traits can be seen as negative, in certain contexts they can also be seen as characteristics of a leader who is not afraid to take risks or assert themselves in the face of adversity.