The word "unnodding" is an uncommon term that describes something or someone who is not nodding, or perhaps, not giving their approval or agreement to something that is being said or done. Some synonyms for "unnodding" could include "disapproving," "unsupportive," "dissenting," "opposing," "negative," "unresponsive," "inhospitable," "unwelcoming," and "unfriendly." These words illustrate the idea of someone who is not giving their endorsement to a situation or idea. Whether you are writing a story or essay, these synonyms can add depth and variety to your language and help you express your thoughts and emotions more effectively.