anxiety Play nounA feeling of worry, nervousness, or unease, typically about an imminent event or something with an uncertain outcome. SYNONYMS agitationangstapprehensionapprehensivenessconcernconsternationdisquietdisquietudeedginessfearfearfulnessforebodingfretfulnessmisgivingnervesnervousnessperturbationstresssuspensetensenesstensiontrepidationuneaseuneasinessworry