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a course of action that is possibly the only way to achieve a particular result, but which is considered to be very extreme
bad or dangerous enough to make you worried
very strict or extreme
much more severe or serious than usual
very serious or severe
used for emphasizing how serious something is
extremely severe or serious
strict, or severe
a start-up … whose value has reached more than one billion US dollars
a bird with a long thin beak that lives mainly in wet areas
an afternoon full of crafts
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Free thesaurus definition of serious severe and extreme from the Macmillan English Dictionary - a free English dictionary online with thesaurus and with pronunciation from Macmillan Publishers Limited.