This term refers to someone who is cowardly, fearful, or lacking courage..
YELLOW-BILLED
Someone of noble or aristocratic birth.
blue-blooded
To accomplish a task or pass an exam with exceptional success, distinction, or ease.
FLYING COLOURS
Become very angry.
see red
Be a good gardener.
have a green thumb
This idiom means "to owe money".
in the red
Catch sb with smth he/she has done.
catch sb red-handed
This idiom means "sometimes, rarely".
once in a blue moon
A time when you are very successful – used especially in news reports.
PURPLE PATCH
This idiom refers to excessive bureaucracy, official rules, or paperwork that causes unnecessary delays.
RED TAPE
Say untrue things because you don't want to hurt sb with the truth.
white lie
Very jealous.
green with envy
Be born into a rich family.
born with a silver spoon in one's mouth
Suddenly, unexpectedly.
out of the blue
This idiom means "to reveal your real character".
true colours
Not knowing anything.
in the dark
Incredible chance.
golden opprotunity
Very different from others, of a bad quality; a person who doesn't fit.
black sheep
Hurt, beaten and injured.
black and blue
To faint suddenly.
black out