rash Definition

rash¹
adj

1a. Said of an action, etc: over-hasty; reckless;

Thesaurus: unthinking, imprudent, madcap, careless, brash, foolhardy, reckless, precipitate, impetuous, impulsive, hasty, indiscreet; Antonym: cautious, responsible.
1b. Said of an action, etc: done without considering the consequences.
2. Said of a person: lacking in caution; impetuous.

Derivative: rashly
adverb

Derivative: rashness
noun

Etymology: 14c.

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rash²
noun

1. An outbreak of red spots or patches on the skin, usually either a symptom of an infectious disease such as measles or chickenpox, or of a skin allergy.
2. A large number of instances (of something happening) at the same time or in the same place.

Example: a rash of burglaries
Thesaurus: epidemic, outbreak, plague, succession, spate, wave, eruption, flood.

Etymology: 18c: from French rasche, from Latin radere to scratch or scrape.