extrēˈmism noun

extrēˈmist noun

1. Someone ready to go to extremes
2. A holder of extreme opinions
3. An advocate of extreme action

Of or characteristic of extremists

extremity /-tremˈi-ti/ noun

1. The utmost limit
2. The highest degree
3. Greatest necessity or distress
4. Extreme condition
5. An end
6. A hand or foot

extrēmˈophile noun

A micro-organism that is capable of living in hostile conditions or an extreme environment

extreme fighting see ultimate fighting under ultimate

extremely high frequency see under frequent

extreme programming noun (also with caps; computing)

A method of software development involving the close collaboration of two or more programmers on small components of code whose design may be subject to sudden changes (abbrev XP)

extreme sport noun

An unconventional sport that exposes the participants to personal danger

extreme unction see under unction

go to extremes

1. To go too far
2. To use extreme measures

in the extreme

1. To the highest degree
2. Extremely

the last extremity

1. The utmost misfortune
2. Death