This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. One who worries excessively and needlessly.

n. A person who worries excessively, especially about unimportant matters.

n. thinks about unfortunate things that might happen

"And yesterday, Sunday, I lamented that going to the movies has become much less of a pleasure for me these days and more of an exercise in worrywart-ism."

wet blanket    kill-joy    party pooper    spoilsport   

hypochondriac    OCD    pessimist   

bundle of nerves    worrier    fussbudget   

mistis    moster    overachiever    debil    messmate    frien    debbil    dorg    mas'r    mucker