Synonyms and antonyms of Serious, severe and extreme in British Thesaurus

the 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

badly (adverb)

in a serious or severe way

critically (adverb)

extremely and seriously

crushing (adjective)

very severe

dearly (adverb)

with serious loss, damage, or trouble

dire (adjective)

very severe or serious

draconian (adjective)

formal extremely strict and severe

dreadfully (adverb)

very severely

explosive (adjective)

very powerful

extravagant (adjective)

extreme, unusual, or unreasonable

extreme (adjective)

very great in degree

far (adjective)

used for asking or saying how true something is or to what degree it happens

far (adjective)

used for talking about how extreme someone’s actions are or how great an effect they have

fatal (adjective)

with very serious negative effects

fatally (adverb)

so seriously that complete failure is the result

ferocious (adjective)

severe or strong

fervid (adjective)

formal strong, violent, or extreme

frontal (adjective)

formal direct and severe

full (adjective)

used for emphasizing that something is as loud, powerful, fast etc as possible

grievous (adjective)

formal extremely serious or severe

gross (adjective)

extreme and unreasonable

heavy (adjective)

very severe

heavy (adjective)

informal serious and threatening

heavy-duty (adjective)

mainly Americaninformal very serious

high-level (adjective)

at a more extreme or advanced level than usual

in full flood ()

in as strong a way as possible

intense (adjective)

very great or extreme

iron (adjective)

very strong, strict, or severe

keen (adjective)

very strong

keenly (adverb)

very strongly

massive (adjective)

very severe

merciless (adjective)

mainly literary very severe

no laughing matter ()

something that should be treated seriously

profound (adjective)

very great

proper (adjective)

considered to be real or serious

raging (adjective)

very serious, painful, or strong

rigid (adjective)

done or applied in a strict and unreasonable way

savage (adjective)

extremely severe

scalding (adjective)

formal very severe

searing (adjective)

extreme in degree or strength

severely (adverb)

very seriously

severely (adverb)

in a very strict or extreme way

sharply (adverb)

in a severe way

sore (adjective)

mainly literary great: used for emphasizing that something is very serious or that it upsets you a lot

spectacular (adjective)

very sudden or extreme, and therefore attracting a lot of attention

stark (adjective)

extreme and obvious

stiff (adjective)

more severe or difficult than usual

strong (adjective)

of a high degree or level

sublime (adjective)

formal used for describing a feeling or quality that is extreme

supreme (adjective)

very great

terminal (adjective)

humorous extreme

tough (adjective)

very strict and severe

towering (adjective)

mainly literary very powerful or extreme

ultimate (adjective)

if you have something such as ultimate power or responsibility, you have more power or responsibility than anyone else

unbearable (adjective)

so extreme that you cannot deal with the pain, feeling etc