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

ultimate /ulˈti-māt, -mət or -mit/

1. Furthest
2. Last
3. Final
4. Fundamental
5. Maximum
6. Most important
7. Greatest
8. Limiting

1. A final point
2. A fundamental
3. The greatest (or otherwise most extreme) thing achievable or conceivable of its sort (informal)

ulˈtimacy /-mə-si/ noun

ulˈtimately adverb

Finally

ultimāˈtum noun (pl ultimāˈta or ultimāˈtums)

1. Final terms
2. A last offer or demand
3. A last word
4. A final point
5. Something fundamental

ulˈtimo adjective

In the last (month) (abbrev ult. or ulto.)

ultimogeniture /-jenˈ/ noun (law)

Succession of the youngest, as in borough-English (qv), opp to primogeniture

ultimate fighting noun

A competitive sport in which two opponents fight each other without protective gear, subject to only minimal rules on the types of blow permissible (also called extreme fighting)

ultimate load noun (aeronautics)

The maximum load that a structure is designed to withstand without a failure

ultimate tensile stress noun (engineering)

The highest load applied to a metal in the course of a tensile test, divided by the original cross-sectional area

the ultimate deterrent

Nuclear weapons