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Uncheerful
- causing sad feelings of gloom and inadequacy; "the economic outlook is depressing"; "something cheerless about the room"; "a moody and uncheerful person"; "an uncheerful place"
Ultramarine
- of a brilliant pure blue to purplish blue color
- a vivid blue to purple-blue color
- blue pigment made of powdered lapis lazuli
Umber
- of the color of any of various natural brown earth pigments
- a medium brown to dark-brown color
- an earth pigment
Unsaturated
- (of color) not chromatically pure; diluted; "an unsaturated red"
- used of a compound (especially of carbon) containing atoms sharing more than one valence bond; "unsaturated fats"
- not saturated; capable of dissolving more of a substance at a given temperature; "an unsaturated salt solution"
Uncolored
- without color; "pure water is uncolored"
- not artificially colored or bleached; "unbleached blonde hair"; "her hair is uncolored"; "undyed cotton"
Uncoloured
- without color; "pure water is uncolored"
Untreated
- (of a specimen for study under a microscope) not treated with a reagent or dye
- not subjected to chemical or physical treatment; "an untreated fabric"
- not given medical care or treatment; "an untreated disease"; "the untreated wounded lay on makeshift cots"
Ultramontane
- on the Italian or Roman side of the Alps; "ancient cisalpine Gaul included an area south and east of the Alps"
- on or relating to or characteristic of the region or peoples beyond the Alps from Italy (or north of the Alps); "ancient transalpine Gaul was an area northwest of the Alps and included modern France and Belgium"; "Cracow was a transalpine university"
- of or relating to ultramontanism
- a Roman Catholic who advocates ultramontanism (supreme papal authority in matters of faith and discipline)
Unchristianly
- not becoming to or like a Christian; "ashamed to have to recognize how unchristianly his assumptions and motives are"