1. to force a liquid, especially a drug or vaccine, into someone’s body using a needle
Usage: medical
2. to force a liquid into something under pressure
3. to add or introduce something new into a situation
Usage: figurative

Examples

• The nurse will inject the vaccine into your arm.
• The doctor injected pain medication directly into the patient’s spine.
• The mechanic injected oil into the engine.
• They inject water into the concrete mixture under high pressure.
• The comedian tried to inject some humor into his serious speech.
• The new manager hopes to inject fresh ideas into the company.
• She injected enthusiasm into the boring meeting.