| get away with blue murder | do just what you like |
| once in a blue moon | something that happens very rarely |
| black and blue | to be physically hurt |
| talk till he was blue in the face | try to convince someone unsuccessfully |
| green (at something) | new |
| blue-blooded | belonging to a royal family |
| talked a blue streak | speak too much |
| out of the blue | something that comes unexpectedly |
| boys in blue | policemen |
| blue-eyed boy | someone who is a favorite |
| between the devil and the deep blue sea | a situation in which you can never win |
| felt blue | be sad |
| has a green thumb | the skill to grow plants |
| green with envy | jealous |
| true blue | faithful |
| gave the green light | said to go ahead and do it |
| green around the gills | feel sick or ill |
| the grass is greener on the other side of the fence | other people have it better |
| get away with blue murder | do just what you like |
| once in a blue moon | something that happens very rarely |
| black and blue | to be physically hurt |
| talk till he was blue in the face | try to convince someone unsuccessfully |
| green (at something) | new |
| blue-blooded | belonging to a royal family |
| talked a blue streak | speak too much |
| out of the blue | something that comes unexpectedly |
| boys in blue | policemen |
| blue-eyed boy | someone who is a favorite |
| between the devil and the deep blue sea | a situation in which you can never win |
| felt blue | be sad |
| has a green thumb | the skill to grow plants |
| green with envy | jealous |
| true blue | faithful |
| gave the green light | said to go ahead and do it |
| green around the gills | feel sick or ill |
| the grass is greener on the other side of the fence | other people have it better |