a little green

1. Having little or no experience in a given field, specialty, or skill. It refers to the color of young vegetation, which has not fully matured. I know the new apprentice is a little green, but I think she'll do just fine in the position. Of course he's a little green—he's 21 years old! How much business experience could he possibly have? The interns are pretty green, but I think they're going to be quick learners.

2. Having a slightly sickly appearance, as from nausea. Are you alright? You're looking a little green. Bobby looked a little green as he came staggering off the rollercoaster. I was more than a little green after that boat ride. It's a miracle I didn't throw up on the docks!