Definition of "worrywart"

It doesn't mean you're a worrywart, a nervous wreck or in need of heavy medication.

2005, Hal Edward Runkel, Screamfree Parenting: Raising Your Kids by Keeping Your Cool, page 31

On vacation, I'm a worrywart for fretting about third-degree burns and puncture wounds.

2008 August 17, Nicole L.V. Mullis, “Vacation renders kids, adult males impervious to danger”, in Battle Creek Enquirer‎

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.

2020 December 7, Zeynep Tufekci, “‘This Must Be Your First’”, in The Atlantic‎