blue

Of a blue hue.

the deep blue sea

Why is the sky blue?

Depressed, melancholic, sad.

“Heavens!” exclaimed Nina, “the blue-stocking and the fogy!—and yours are pale blue, Eileen!—you’re about as self-conscious as Drina—slumping there with your hair tumbling à la Mérode! Oh, it's very picturesque, of course, but a straight spine and good grooming is better.[…]”

"Will you play some of the 'Garden' now?" she asked. "I think I should like it. I'm just the least bit blue."

Having a bluish or purplish shade to the skin due to a lack of oxygen to the normally deep-red red blood cells; cyanotic.

My hands were blue with cold.

The divers got them out of the car just in time – they were starting to turn blue.

Pale, without redness or glare.

The candle burns blue.

Supportive of, run by (a member of), pertaining to, or dominated by a political party represented by the colour blue.

I live in a blue constituency.  Congress turned blue in the mid-term elections.

The colour of the clear sky or the deep sea; the colour midway between green and violet in the visible spectrum and one of the primary additive colours.

Lady Penrhyn was quite handsome enough to have spared one ingredient in her cup of fascination, but, unfortunately, having been married in her teens, she expected to live in them, and, never being reminded by the trials to which her sex is subject, of the flight of years, and the inroads of suffering, expected time to stand still, and the first bloom of existence (the blue on the plum) to remain as stationary as her own taste, for the pleasures of flirtation.

She watches the yachts in the creamy evening blues.

Anything coloured blue, especially to distinguish it from similar objects differing only in colour.

I don't like red Smarties. Have you got a blue?

A blue dye or pigment.

Blue clothing.

The boys in blue marched to the pipers.

Blue clothing.

To make or become blue; to turn blue.

It blows, it snows, And blues your nose, My toes are all frost bitten The weather would Quite starve the crows, Or freeze the part you sit on.

The dawn is wanly blueing.

To treat the surface of steel so that it is passivated chemically and becomes more resistant to rust.

To brighten by treating with blue (laundry aid).

To fight, brawl, or argue.

It was years since Ken had flogged her up, but blueing with him still made her ache.