The term "non resonant" refers to a situation where something does not ring out or vibrate in response to an external force or stimulus. Some synonyms for this include unresponsive, inert, immobile, or motionless. These terms can be applied to various objects or situations, such as a non-reactive chemical compound, an immovable object that cannot be moved by an external force, or a person who is unresponsive to the emotions or needs of others. Regardless of the context, using synonyms for "non resonant" can help to add variety to your writing and avoid repetition.