extreme

The greatest or utmost point, degree or condition.

Each of the things at opposite ends of a range or scale.

“extremes of temperature”

A drastic expedient.

“Some people go to extremes for attention on social media.”

Either of the two numbers at the ends of a proportion, as 1 and 6 in 1:2=3:6.

Of a place, the most remote, farthest or outermost.

“At the extreme edges, the coating is very thin.”

In the greatest or highest degree; intense.

“He has an extreme aversion to needles, and avoids visiting the doctor.”

Excessive, or far beyond the norm.

“His extreme love of model trains showed in the rails that criscrossed his entire home.”

Drastic, or of great severity.

“I think the new laws are extreme, but many believe them necessary for national security.”

Of sports, difficult or dangerous; performed in a hazardous environment.

“Television has begun to reflect the growing popularity of extreme sports such as bungee jumping and skateboarding.”

Ultimate, final or last.

“the extreme hour of life”

Extremely.