vô cùng khắc nghiệt quá khích cực đoan sự quá khích 
extreme like: vô cùng → →
a very difficult thing ☊ 
điều vô cùng khó khan ☊ My son's terribly untidy; my daughter's no different. ☊ different ☊
The problems facing the President are enormous. ☊ enormous ☊
extremely important/useful/complicated ☊ extremely ☊
Any piece of silver bearing his mark is extremely valuable. ☊ mark ☊
I felt extremely fit, both physically and mentally. ☊ mentally ☊
I'm more than happy (= extremely happy) to take you there in my car. ☊ more ☊
She was more than a little shaken (= extremely shaken) by the experience. ☊ more ☊
a hugely/immensely popular singer ☊ popular ☊
an immensely powerful organization ☊ powerful ☊
Believe me, I'm deadly (= extremely) serious. ☊ serious ☊
We used glue to stick the broken pieces together. ☊ stick ☊
The house was strangely quiet. ☊ strangely ☊