green

- to be inexperienced or immature

The young man is rather green and does not have enough experience to drive the large piece of machinery.

green around the gills

- looking sick

My friend looked green around the gills after the long bus ride.

green belt

- an area of fields and trees around a town

Our city has a policy to increase the green belt around the city.

green-eyed monster

- jealousy

The woman was consumed by the green-eyed monster and it was affecting her life.

green thumb

- a talent for gardening, the ability to make things grow

My neighbor has a green thumb and she is able to grow one of the best gardens in our neighborhood.

green with envy

- to be very jealous, to be full of envy

I was green with envy when I heard that my cousin would be going to London for a week.

greenhorn

- an untrained/inexperienced/naive person

The young man was a greenhorn and he had much to learn about his new job.

pitch-black

- very black, as black as pitch

The road was pitch-black and we could not see anything.

pot calling the kettle black

- the person who criticizes/accuses someone else is as guilty as the person he or she criticizes/accuses

My friend criticized me for not changing jobs but that is like the pot calling the kettle black. She will not change jobs either.

put (something) down in black and white

- to write the details of a contract or something on paper

I asked the buyer to put the offer to buy my car down in black and white.