What does 'hit the ground running' mean?

What it means: To start something immediately and at full speed - with no slow build-up or settling-in period. If an employer says "we need someone who can hit the ground running," they mean they want someone who can be productive from day one, not someone who needs months to get up to speed.

Where it comes from: Military origin - soldiers jumping from planes or helicopters had to start running the moment they hit the ground, with no pause.

• "She hit the ground running in her new role - she was leading meetings by week two."
• "We need to hit the ground running on this project."
• "I want someone who can hit the ground running, not someone we have to train from scratch."

• "Get off to a strong start" - more neutral
• "Jump straight in" - informal, implies diving into work immediately
• "Be up and running quickly" - more about systems than people
• "Come in ready to go" - casual version

Register: Common in job interviews, performance reviews, and project discussions. Sounds natural in professional speech, though it's become a cliché - use it deliberately rather than habitually.

Tags: workplace English, idiom, starting, productivity, job interviews