the word "worrywart" is a modern american english compound, first recorded in the 1950s. it creatively combines "worry," a verb of old english origin originally meaning to strangle or seize by the throat, with "wart," a noun for a small, benign skin growth. the term employs "wart" not in its literal sense but as a colloquial, mildly derogatory suffix to label a person, similar to its use in words like "tattletale." the logic of the compound is metaphorical, painting a vivid picture of a person whose defining, and perhaps irritating, characteristic is persistent, often unnecessary, anxiety.

Structure: worry + wart worry (from old english wyrgan, meaning to strangle or to be anxious; functional role: root conveying the core concept of anxiety). wart (from old english wearte, meaning a small, hard growth on the skin; functional role: metaphorical suffix, used pejoratively to denote a person characterized by the root).