worrywart

[wur-ee-wawrt, wuhr-] /ˈwɜr iˌwɔrt, ˈwʌr-/
noun
1.
a person who tends to worry habitually and often needlessly; pessimist; fussbudget.
Origin
1930-35; worry + wart
British Dictionary definitions for worrywart

worryguts

/ˈwʌrɪˌɡʌts/
noun
1.
(informal) a person who tends to worry, esp about insignificant matters
Slang definitions & phrases for worrywart

worrywart

noun phrase

A person who worries excessively; a constantly apprehensive person

[1956+; fr the designation of such a person in the comic strip ''Out Our Way'' by J R Williams]