Overview

Episode Theme:
Today's episode of Merriam-Webster's Word of the Day (March 14, 2026) centers on the word "rash"—exploring its meaning, usage, and etymology as both an adjective (describing hasty actions) and as a noun (a cluster of skin spots).
Host: Peter Sokolowski

Key Discussion Points & Insights

1. Definition and Usage of "Rash" [00:42]

• Adjective:
  Describes something done quickly and without sufficient consideration for the consequences. Can also describe a person who acts in this manner.

  "Rash is an adjective. It describes something done or made quickly and without thought about what will happen as a result."
  — Peter Sokolowski [00:42]

• Example Sentence:
  Sokolowski provides a clear, contextual sentence sourced from a film review:

  "Threads like Hannah's rash decision to undertake a dangerous surgical fix virtually evaporate without much payoff."
  — Peter Sokolowski [00:57]

2. Dual Meanings of "Rash" (Homonyms) [01:12]

• The host introduces the secondary, noun form: a group of red spots on the skin, usually from illness or allergic reaction.

• He addresses a common question:
  Are the adjective ("over hasty") and the noun ("skin spots") meanings connected in origin?

  "Is it possible that the origins of the noun rash, referring to a group of red spots on the skin that is caused by an illness or a reaction to something, and the adjective rash, meaning over hasty, are the same? Not so fast."
  — Peter Sokolowski [01:19]

3. Etymology: Separate Origins [01:27]

• Noun ("skin rash"):
  Likely derives from the Latin verb radire (to scrape, scratch, or shave) and entered English in the late 17th century.

  "The noun rash, which first appeared in English in the late 17th century, probably comes ultimately from the Latin verb radire, meaning to scrape, scratch or shave."
  — Peter Sokolowski [01:35]

• Adjective ("hasty, reckless"):
  Is about 200 years older, tracing back to Middle English rasch (meaning active, quick, or eager).

  "The adjective rash appears to be about two centuries older and comes from a Middle English word rash, R A S C H, meaning active, quick or eager."
  — Peter Sokolowski [01:46]

• Clarification on Homonyms:
  Even though the forms are the same, the meanings and origins are distinct—a common scenario in English homonyms.

Notable Quotes

• "Like many homonyms, two or more words spelled and pronounced alike but different in meaning, the two rashes have distinct sources."
  — Peter Sokolowski [01:30]

• "With your Word of the Day, I'm Peter Sokolowski."
  — Peter Sokolowski [01:57]

Segment Timestamps

• Definition and Example Usage: [00:42–01:11]
• Question About Origins: [01:12–01:28]
• Etymology and Homonym Clarification: [01:29–01:57]

Tone and Style

The host maintains an educational yet conversational tone, making etymology and word lore approachable and engaging for listeners, with clear explanations and relevant examples.

Recap

In this episode, Merriam-Webster unpacks the word "rash", clarifying its dual roles as both a descriptor of impulsive actions and as a medical term. The episode underlines that, despite their spelling, the two meanings arise from distinct linguistic roots—a fun illustration of English's quirks.