Learner's definition of INJURE
to harm or damage (someone or something)
She fell and injured herself.
She fell and slightly injured her arm.
The criticism injured [=wounded] his pride.
The scandal has injured [=tarnished] her reputation.
Several people were badly/seriously/critically injured in the accident.
He believes that the tax will injure [=hurt] small businesses.
is usually used when the body of a person or animal has been harmed by something, such as an accident.
hurt and harm
are both often used to mean the same thing as
often emphasizes physical or emotional pain.
often emphasizes a bad change in health.
is often used when something loses value or becomes less useful.
The table was damaged in shipping.
fruit trees damaged by frost
Very loud music may damage your ears.
suggests that something has been made weaker or worse.