Notably above average in amount, size, or scope
Having great significance
Much or large
His note pad was ever present and he spent a considerable amount of time on the phone.
She has made considerable progress in the study of arithmetic.
I also gave considerable time to the improvement of my speech.
Imboden, with s000 Confederates, overran a considerable portion of the state.
above sea-level, and is nearly enclosed by mountains of considerable elevation.