worrywart

1. (originally US) A person who worries excessively, especially about unimportant matters.Examples: "It doesn't mean you're a worrywart, a nervous wreck or in need of heavy medication."; "On vacation, I'm a worrywart for fretting about third-degree burns and puncture wounds."; "When Biden takes the presidential oath in January, many will write articles scolding those who expressed concern about a coup as worrywarts, or as people misusing terminology."Synonyms: bundle of nerves, worrier, bag of nerves, bundle of nerves, jitterbug, nervous Nellie, nervous wreck, neurotic