blue

See:

a blue-eyed boy a bolt from the blue between a rock and a hard place between the devil and the deep blue sea black and blue black-and-blue blue blood blue collar blue in the face blue-collar bolt from the blue

burn with a low blue flame come out of a clear blue sky cuss a blue streak Damn it to blue blazes! feel blue into the wide blue yonder like a bolt from the blue like a bolt out of the blue like blue blazes once in a blue moon out of a clear blue sky

out of the blue pale around the gills run around like a blue-arsed fly scream blue murder screwed, blued, and tattooed swear blind talk a blue streak talk until one is blue in the face the boys in blue true-blue until are blue in the face