W: (n) worrier [Related to: worry] (thinks about unfortunate things that might happen)
W: (n) worry [Related to: worry] (a strong feeling of anxiety) "his worry over the prospect of being fired"; "it is not work but worry that kills"; "he wanted to die and end his troubles"
W: (n) worry [Related to: worry] (something or someone that causes anxiety; a source of unhappiness) "New York traffic is a constant concern"; "it's a major worry"