of great extent; wide; broad

an extensive area.

covering or extending over a great area

extensive travels.

far-reaching; comprehensive; thorough

extensive knowledge.

lengthy

an extensive journey.

great in amount, number, or degree

an extensive fortune; extensive political influence.

of or having extension

Space is extensive, time durational.

noting or pertaining to a system of agriculture involving the use or cultivation of large areas of land with a minimum of labor and expense ( opposed to intensive ).