anx·i·e·ty aNGˈzīədē/ noun a feeling of worry, nervousness, or unease, typically about an imminent event or something with an uncertain outcome. synonyms: worry, concern, apprehension, apprehensiveness, uneasiness, unease, fearfulness, fear, disquiet, disquietude, inquietude, perturbation, agitation, angst, misgiving, nervousness, nerves, tension, tenseness; 一 "Riley, deep breaths." "Deep breaths." "Yeah, just like that."