extreme

1 ENTRIES FOUND:
1 extreme /ɪkˈstriːm/ adjective
1 extreme
/ɪkˈstriːm/
adjective
Britannica Dictionary definition of EXTREME
1 
: very great in degree
2 
[more extreme; most extreme] : very serious or severe
3 
[more extreme; most extreme] : very far from agreeing with the opinions of most people : not moderate
4 
always used before a noun : in the farthest possible position
5 
sports
a  : unusual and dangerous
b  always used before a noun, US : involved in an unusually dangerous sport : competing in an extreme sport

go to extreme lengths

— see length

— extremely

adverb
2 extreme /ɪkˈstriːm/ noun
plural extremes
2 extreme
/ɪkˈstriːm/
noun
plural extremes
Britannica Dictionary definition of EXTREME
[count]
1 
: either one of two opposite conditions, feelings, positions, etc., that are thought of as being far from what is normal or reasonable
— often plural
2 
: an amount or degree that is far beyond what is normal or reasonable
◊ If you carry/take (something) to extremes or go to extremes, you do much more than most people would consider reasonable or normal.

in the extreme

formal
: to the greatest possible degree — used to make a statement more forceful