2. Worthy of consideration; worthy of regard or attention.

Eternity is infinitely the most considerable duration.

As that which is worthy of regard is in some measure important, hence

3. Respectable; deserving of notice; of some distinction; applied to persons.

Men considerable in all worthy professions, eminent in many ways of life.

4. Important; valuable; or moderately large, according to the subject. Considerable aid was expected from the allies. A man has a considerable estate in Norfolk. A considerable sum of money was collected. Sometimes followed by to. He thought his aid considerable to him.