Nonplusing is a term that describes a feeling of confusion or bewilderment. Synonyms for this word include perplexing, confounding, puzzling, mystifying, and baffling. When someone is nonplused, they may be left feeling uncertain about what to do next or how to proceed with a particular task or project. Other synonyms for this term include flummoxed, dumbfounded, stunned, and stumped. No matter the exact word used, the concept of nonplusing refers to a state of mental confusion or disorientation that can be challenging to navigate or overcome. However, with patience and perseverance, people can typically work through their confusion and find clarity.