intensive

Secondly, I continue to base my concepts on intensive study of a limited suite of collections, rather than superficial study of every packet that comes to hand.

This job is difficult because it is so labour-intensive.

I took a three-day intensive course in finance.

the intensive distance between the perfection of an Angel and of a Man is but finite

intensive circumspection

an intensive verb or preposition

She was moved to the intensive-care unit of the hospital.