What does intensive mean?
“Intensive” means characterized by concentrated effort, close attention, or a high degree of activity. It is often used for courses, training, treatment, and work that require sustained focus or unusually demanding conditions. The word can imply that something is difficult or exhausting, but it also conveys efficiency: intense activity may be deliberately packed into a limited period, such as an intensive language course or intensive therapy. In medicine, “intensive care” names specialized treatment and continuous monitoring for people in critical condition. Although “intensive” and “intense” are related, they emphasize different aspects: “intense” commonly describes a powerful feeling or sensation, while “intensive” describes a concentrated process or arrangement. The word is understood in both British and American English and is useful when discussing effort, focus, and the distinction between concentrated and broadly distributed activity.
adjectiveInvolving concentrated effort, close attention, or a high degree of intensity. It can describe demanding courses, training, treatment, or work undertaken in a particularly focused way.
- Concentrated in a demanding amount, involving substantial effort, attention, or activity.
- Characterized by close, continuous supervision or specialized treatment, as in intensive care, intensive therapy, or intensive training.
"The hospital has a dedicated intensive care unit for patients requiring continuous monitoring."
"She completed an intensive six-week course in preparation for the exam."
"The patient was moved to intensive care after surgery because her condition required constant monitoring."
Intensive describes intensity with a purpose: concentrating effort, attention, or treatment into a focused period or setting.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does intensive come from?
“Intensive” entered English in the early nineteenth century through French, from Latin forms connected with intensivus, meaning “intensive” or “strengthening.” The Latin family ultimately derives from intensus, which could mean “stretched,” “extended,” or “intensified.” Related English words include “intense,” “intensity,” “intent,” and “tension,” all reflecting the same Latin root.
Related word forms
How intensive is actually used
The adjective is common in educational, medical, professional, and training contexts. It can suggest that something is difficult or demanding, while “intensive care” is a conventional medical term rather than an idiom.
Easily confused with intensive
“Intensive” describes something conducted with concentrated effort or attention, while “intense” more often describes a strong feeling, sensation, or experience.
“Intensive” implies concentrated effort within a limited period or setting, whereas “extensive” suggests broad coverage or a large amount.