极

Extremes meet.

extremes of poverty and wealth

be at the height of folly; be foolish in the extreme; be the ultimate in stupidity

be in an extremity of pain

One's ambition and gain is unlimited.

reach top magnificence of the time

do everything possible; spare no effort

height/summit/zenith of one's career

exceedingly/extremely high mountain

This reply was a classic.

Little information is found in this aspect.

The price is sky-high.

How marvellous! / Excellent!

a tiny minority/number (of); only a few; a very small handful (of)

be bored to death

be in extreme agony

be in violent anger

be worn out completely

be in perfectly good condition/form

have very poor eyesight

be of the utmost importance

be supremely happy

be not satisfied at all

be absolutely unsafe

The earth is slightly flattened at the poles.