to exceed (by a lot); to (far) surpass
to end; to cease; to stop
その光景は想像を絶した美しさだった。
The scenery was of a beauty that defied imagination.
その大惨事は人々の理解を絶しているとしか言えなかった。
The catastrophe was beyond people's comprehension, there were no other words for it.
彼女の声量は想像を絶するほど大きかった。
Her vocal power was greater than imagination could conceive.