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Serious, severe and extreme - synonyms or related words

nuclear option

noun

a course of action that is possibly the only way to achieve a particular result, but which is considered to be very extreme

serious

adjective

bad or dangerous enough to make you worried

severe

adjective

very strict or extreme

extreme

adjective

much more severe or serious than usual

awful

adjective

very serious or severe

grave

adjective

used for emphasizing how serious something is

acute

adjective

very serious or severe

desperate

adjective

extremely severe or serious

profound

adjective

very severe

rigorous

adjective

strict, or severe

nanodegree

a course of study which is much shorter than a university course and focuses on the skills you need for a job, especially computer-related skills

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Open Dictionary

hypocaust

an ancient Roman system of underfloor heating, used to heat houses with hot air; from the Latin 'hypocaustum'

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