| blue | (adjective) of the color intermediate between green and violet; having a color similar to that of a clear unclouded sky | Synonyms: blueish, bluish |
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| (adjective) filled with melancholy and despondency | Synonyms: depressed, dispirited, down, down in the mouth, downcast, downhearted, gloomy, grim, low-spirited, low |
| (adjective) causing dejection | Synonyms: dark, dingy, disconsolate, dismal, drab, drear, dreary, gloomy, grim, sorry |
| (adjective) belonging to or characteristic of the nobility or aristocracy | Synonyms: aristocratic, aristocratical, blue-blooded, gentle, patrician |
| (adjective) morally rigorous and strict | Synonyms: puritanic, puritanical |
| (adjective) used to signify the Union forces in the American Civil War (who wore blue uniforms) | - |
| (adjective) suggestive of sexual impropriety | Synonyms: gamey, gamy, juicy, naughty, racy, risque, spicy |
| (adjective) characterized by profanity or cursing | Synonyms: blasphemous, profane |
| (noun) any of numerous small butterflies of the family Lycaenidae | - |
| (noun) the sodium salt of amobarbital that is used as a barbiturate; used as a sedative and a hypnotic | Synonyms: amobarbital sodium, Amytal, blue angel, blue devil |
| (noun) blue clothing | - |
| (noun) blue color or pigment; resembling the color of the clear sky in the daytime | Synonyms: blueness |
| (noun) any organization or party whose uniforms or badges are blue | - |
| (noun) the sky as viewed during daylight | Synonyms: blue air, blue sky, wild blue yonder |
| (noun) used to whiten laundry or hair or give it a bluish tinge | Synonyms: blueing, bluing |
| (verb) turn blue | - |
| clue | (noun) a slight indication | Synonyms: hint |
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| (noun) evidence that helps to solve a problem | Synonyms: clew, cue |
| (verb) roll into a ball | Synonyms: clew |
| devalue | (verb) lower the value or quality of | - |
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| (verb) lose in value | Synonyms: depreciate, devaluate, undervalue |
| (verb) remove the value from; deprive of its value | Synonyms: devaluate |
| eigenvalue | (noun) (mathematics) any number such that a given square matrix minus that number times the identity matrix has a zero determinant | Synonyms: characteristic root of a square matrix, eigenvalue of a matrix, eigenvalue of a square matrix |
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| flue | (noun) a conduit to carry off smoke | - |
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| (noun) organ pipe whose tone is produced by air passing across the sharp edge of a fissure or lip | Synonyms: flue pipe, labial pipe |
| (noun) flat bladelike projection on the arm of an anchor | Synonyms: fluke |
| glue | (noun) cement consisting of a sticky substance that is used as an adhesive | Synonyms: gum, mucilage |
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| (verb) be fixed as if by glue | - |
| (verb) join or attach with or as if with glue | Synonyms: paste |
| overvalue | (verb) assign too high a value to | Synonyms: overestimate |
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| revalue | (verb) gain in value | Synonyms: appreciate, apprise, apprize |
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| (verb) value anew | - |
| slue | (verb) turn sharply; change direction abruptly | Synonyms: curve, cut, sheer, slew, swerve, trend, veer |
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| (verb) move obliquely or sideways, usually in an uncontrolled manner | Synonyms: skid, slew, slide, slip |
| undervalue | (verb) lose in value | Synonyms: depreciate, devaluate, devalue |
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| (verb) assign too low a value to | Synonyms: underestimate |
| (verb) esteem lightly | - |
| value | (noun) the quality (positive or negative) that renders something desirable or valuable | - |
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| (noun) relative darkness or lightness of a color | - |
| (noun) a numerical quantity measured or assigned or computed | - |
| (noun) an ideal accepted by some individual or group | - |
| (noun) the amount (of money or goods or services) that is considered to be a fair equivalent for something else | Synonyms: economic value |
| (noun) (music) the relative duration of a musical note | Synonyms: note value, time value |
| (verb) evaluate or estimate the nature, quality, ability, extent, or significance of | Synonyms: appraise, assess, evaluate, measure, valuate |
| (verb) regard highly; think much of | Synonyms: esteem, prise, prize, respect |
| (verb) estimate the value of | Synonyms: rate |
| (verb) fix or determine the value of; assign a value to | - |
| (verb) hold dear | Synonyms: appreciate, prize, treasure |