viable

語源:French vie=life+able 生きることができる

形容詞:(計画などが)実行可能な、現実味のある

The 3D television for home use is becoming commercially viable nowadays.
The stimulative measure of the economy is a good idea, but I don't know if it is financially viable.
The only viable alternative to compensate for the lost credibility is to respond to all of the costomers' requests.

類義語
feasible(準1級頻出)
実行できる、実現可能な(possibleより格式張った語)
The NASA expert says it will be feasible for ordinary people to travel to moon within fifty years.
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