This is the extremer option.

She reached an extremal level of excitement.

She reached the extremal of her physical abilities.

The extremality of the solution was evident in its optimal performance.

The extremization of his beliefs led to radical actions.

The extremals of the function are the points where it reaches its maximum or minimum values.

She extremized her workout routine to prepare for the marathon.

The situation has been extremized due to the recent events.

She is extremally talented in playing the piano.

She injured her extremitys while hiking.