She was saved with chest compressions and weeks of intensive care.
On the cracked veranda, her intensive care, the newest babies fail to thrive.
After the usual last six weeks of intensive summer training, my adieus were to be quick and painless; I would make sure of it.
mid-15c., from French intensif (14c.), from Latin intens-, past participle stem of intendere (see intend). As a noun, 1813, from the adjective. Alternative intensitive is a malformation. Intensive care attested from 1958. Related: Intensively.