Translation guide
The English word "rash" can refer to a skin condition or to acting hastily without careful thought. This guide covers both meanings separately, with natural Japanese expressions for each.
Referring to a red, itchy, or irritated area on the skin, often caused by allergy, illness, or irritation.
The standard medical and everyday term for a skin rash. Can be used for various types of rashes.
I got a rash on my arm.
A rash may appear as a side effect of that medicine.
Specifically refers to eczema or dermatitis, often used for chronic, itchy rashes. More specific than 発疹.
My eczema got worse due to stress.
Refers to a rash caused by contact with an irritant or allergen, like poison ivy or a cosmetic. Often used for contact dermatitis.
My skin got a rash from the new cosmetics.
Hives; a specific type of rash with raised, itchy welts, often due to an allergic reaction.
I broke out in hives after eating shrimp.
Describing a decision or action made too quickly, without enough consideration of the consequences.
An adjective meaning rash, thoughtless, or imprudent. Often used to criticize a decision or action.
His rash remark caused a problem.
The past tense of 早まる (to be hasty), used to describe a rash decision or action. Often used in the phrase 早まったことをする (do something rash).
Means reckless or foolhardy, often implying a rash disregard for danger or consequences. Stronger than 軽率.
Describes a person who is impatient or hasty by nature, often leading to rash actions. Can be used as a noun or adjective.
Means jumping to a conclusion or taking a simplistic, rash approach without considering complexity. Often used in formal or critical contexts.
The English word "rash" has two completely unrelated meanings. In Japanese, these are expressed with different words. Using 発疹 (skin rash) when you mean "hasty" would be a serious mistake.
軽率 (keisotsu) implies thoughtlessness or lack of prudence, while 無謀 (mubō) implies recklessness and disregard for danger. 軽率 is more about poor judgment, 無謀 is about ignoring risks.
You should avoid rash actions.
Think carefully before you do anything rash.
That was a rash judgment.
無謀な運転は事故のもとだ。
Reckless driving causes accidents.
彼はせっかちだから、よく早とちりする。
He's so impatient that he often jumps to rash conclusions.
A rash, simplistic solution will make the problem worse.