extremes is a form of:

Extreme



noun
1.
(the utmost point or degree, the first and last of a series) អច្ចន្ដភាព, ភាពចុងបំផុត, អច្ចន្ដភាគ, ក្រោយបំផុត
2.
អច្ចន្កិកភាពភាពហួសហេតុបំផុត
adjective
1.
(very great or intense, to an excessive degree, unconventional, severe, drastic, at the utmost point, edge, or border, outermost, most urgent) ដែលខ្លាំងបំផុត, ដែលហួសហេតុ, ដ៏ក្រៃលែង
2.
(បច្ចេកទេស) ហួសហេតុជ្រុល បំផុត
ENGLISH MEANING
noun
1.
The best of worst; most urgent; greatest; highest; immoderate; excessive; most violent; as, an extreme case; extreme folly.
2.
The utmost point or verge; that part which terminates a body; extremity.
3.
Utmost limit or degree that is supposable or tolerable; hence, furthest degree; any undue departure from the mean; -- often in the plural: things at an extreme distance from each other, the most widely different states, etc.; as, extremes of heat and cold, of virtue and vice; extremes meet.
4.
An extreme state or condition; hence, calamity, danger, distress, etc.
5.
Either of the extreme terms of a syllogism, the middle term being interposed between them.
6.
The first or the last term of a proportion or series.
adjective
1.
Radical; ultra; as, extreme opinions.
2.
Extended or contracted as much as possible; -- said of intervals; as, an extreme sharp second; an extreme flat forth.
3.
At the utmost point, edge, or border; outermost; utmost; farthest; most remote; at the widest limit.
4.
Last; final; conclusive; -- said of time; as, the extreme hour of life.