1. [Noun]: any organization or party whose uniforms or badges are blue; "the Union army was a vast blue"

2. [Noun]: used to whiten laundry or hair or give it a bluish tinge

3. [Noun]: the sodium salt of amobarbital that is used as a barbiturate; used as a sedative and a hypnotic

4. [Noun]: the color of the clear sky in the daytime; "he had eyes of bright blue"

5. [Noun]: the sky as viewed during daylight; "he shot an arrow into the blue"

6. [Noun]: any of numerous small chiefly blue butterflies of the family Lycaenidae

7. [Noun]: blue clothing; "she was wearing blue"

8. causing dejection; "a blue day"; "the dark days of the war"; "a week of rainy depressing weather"; "a disconsolate winter landscape"; "the first dismal dispiriting days of November"; "a dark gloomy day"; "grim rainy weather"

9. characterized by profanity or cursing; "foul-mouthed and blasphemous"; "blue language"; "profane words"

10. belonging to or characteristic of the nobility or aristocracy; "an aristocratic family"; "aristocratic Bostonians"; "aristocratic government"; "a blue family"; "blue blood"; "the blue-blooded aristocracy"; "of gentle blood"; "patrician landholders of the

11. suggestive of sexual impropriety; "a blue movie"; "blue jokes"; "he skips asterisks and gives you the gamy details"; "a juicy scandal"; "a naughty wink"; "naughty words"; "racy anecdotes"; "a risque story"; "spicy gossip"

12. having a color similar to that of a clear unclouded sky; "October''s bright blue weather"- Helen Hunt Jackson; "a blue flame"; "blue haze of tobacco smoke"

13. low in spirits; "lonely and blue in a strange city"; "depressed by the loss of his job"; "a dispirited and resigned expression on her face"; "downcast after his defeat"; "feeling discouraged and downhearted"

14. used to signify the Union forces in the Civil War (who wore blue uniforms); "a ragged blue line"

15. [Verb]: turn blue

1. cheerless

2. uncheerful

3. chromatic

4. dirty

5. dejected

6. noble

7. northern

8. sexy