intensive

Academic Word List, sublist 8.

About 14.49 uses per million words.

Meaning

adjective Done with intensity or to a great degree; thorough.
adjective Being made more intense.
adjective Making something more intense; intensifying. Of agriculture: increasing the productivity of an area of land.
an intensive verb or preposition
adjective Of agriculture: increasing the productivity of an area of land.
adjective Of a word: serving to give emphasis or force.
an intensive verb or preposition
adjective Involving much activity in a short period of time; highly concentrated.
I took a three-day intensive course in finance.
adjective Of or pertaining to innate or internal intensity or strength rather than outward extent.
adjective Chiefly suffixed to a noun: using something with intensity; requiring a great amount of something; demanding.
This job is difficult because it is so labour-intensive.