Fear fr n. A very unpleasant or disturbing feeling caused by the presence or imminence of danger Our fears intensified as the storm approached. A state. ASPCA veterinarians and behaviorists offer these guidelines regarding your dogs health and daily activities. Study guides and discussion forums offered on various academic subjects. Literature section includes brief analyses of characters, themes and plots. Fear definition, a distressing emotion aroused by impending danger, evil, pain, etc., whether the threat is real or imagined the feeling or condition of being afraid.