Question

rash 【rash】adj.鲁莽的；冒失的Only a rash person would have rushed into the burning house to save some clothes.只有鲁莽的人才会冲进失火的屋中，去救一些衣服。

Accepted Answer

[ræʃ] 
rashimprudently incurring risk
A rash is something that spreads like wild fire — red itchy skin or a series of unfortunate events. It can also describe an impulsive, wild decision.
As an adjective, rash has meant "quick, vigorous" since the 1300s by way of Scotland. The meaning shifted to "reckless" a few hundred years later, and can still be used that way — a "rash decision" is a sudden, not well thought out one. Rash, the noun that no one wants on their skin, came a few hundred years after that, but from the French word rache which at some point meant "ringworm." Ringworm still gives us a red, itchy rash. Fun! Rash can also mean a lot of unpleasant things happening in a short amount of time, like robberies or earthquakes.
All forms of 'rash' will appear on average once every 435 pages.rashrashlyrashness

Front	rash
Pron	[ræʃ]
Back	【rash】 adj.鲁莽的；冒失的 Only a rash person would have rushed into the burning house to save some clothes. 只有鲁莽的人才会冲进失火的屋中，去救一些衣服。
Vocab	rashimprudently incurring risk A rash is something that spreads like wild fire — red itchy skin or a series of unfortunate events. It can also describe an impulsive, wild decision. As an adjective, rash has meant "quick, vigorous" since the 1300s by way of Scotland. The meaning shifted to "reckless" a few hundred years later, and can still be used that way — a "rash decision" is a sudden, not well thought out one. Rash, the noun that no one wants on their skin, came a few hundred years after that, but from the French word rache which at some point meant "ringworm." Ringworm still gives us a red, itchy rash. Fun! Rash can also mean a lot of unpleasant things happening in a short amount of time, like robberies or earthquakes. All forms of 'rash' will appear on average once every 435 pages. rash rashly rashness

Rash Wild Itchy Meant Hundred Years Ræʃ Adj.鲁莽的；冒失的