| bustier | (noun) a close-fitting and strapless top without sleeves that is worn by women either as lingerie or for evening dress | - |
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| cottier | (noun) a medieval English villein | Synonyms: cotter |
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| courtier | (noun) an attendant at the court of a sovereign | - |
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| frontier | (noun) an undeveloped field of study; a topic inviting research and development | - |
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| (noun) a wilderness at the edge of a settled area of a country | - |
| (noun) an international boundary or the area (often fortified) immediately inside the boundary | - |
| metier | (noun) an occupation for which you are especially well suited | Synonyms: medium |
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| (noun) an asset of special worth or utility | Synonyms: forte, long suit, speciality, specialty, strength, strong point, strong suit |
| rentier | (noun) someone whose income is from property rents or bond interest and other investments | - |
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| tier | (noun) one of two or more layers one atop another | - |
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| (noun) any one of two or more competitors who tie one another | - |
| (noun) a relative position or degree of value in a graded group | Synonyms: grade, level |
| (noun) something that is used for tying | - |
| (noun) a worker who ties something | Synonyms: tier up |
| untier | (noun) a person who unfastens or unwraps or opens | Synonyms: opener, undoer, unfastener |
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