worrier

noun

Etymology: Etymology tree English worry Proto-Indo-European *-yósder. Proto-Italic *-āzijos Latin -āriusnom. Latin -āriusbor. Proto-Germanic *-ārijaz Proto-West Germanic *-ārī Old English -ere Middle English -ere English -er English worrier From worry + -er.

1. A person who worries a great deal, especially unnecessarily.

   “You are such a worrier! I'm sure everything will turn out all right.”

2. A person who causes worry in others.
3. An animal that seizes or shakes another by the throat.

   “The person owning a dog which had destroyed sheep could be made to pay for the damage; but the Court should also have an undoubted power to order incurable sheep-worriers to be destroyed.”