| auctioneer | (noun) an agent who conducts an auction | - |
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| commissioner | (noun) a government administrator | - |
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| (noun) a member of a commission | - |
| concessioner | (noun) someone who holds or operates a concession | Synonyms: concessionaire |
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| conditioner | (noun) exercise that conditions the body | - |
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| (noun) a substance used in washing (clothing or hair) to make things softer | - |
| (noun) a trainer of athletes | - |
| confectioner | (noun) someone who makes candies and other sweets | Synonyms: candymaker |
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| confectionery | (noun) the occupation and skills of a confectioner | - |
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| (noun) a confectioner's shop | Synonyms: candy store, confectionary |
| (noun) candy and other sweets considered collectively | - |
| conventioneer | (noun) someone who attends a convention | - |
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| directioner | (noun) a fan on the band One Direction | - |
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| electioneering | (noun) the campaign of a candidate to be elected | Synonyms: campaigning, candidacy, candidature, political campaign |
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| (noun) persuasion of voters in a political campaign | Synonyms: bell ringing, canvassing |
| electrocutioner | (noun) an executioner who uses electricity to kill the condemned person | - |
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| executioner | (noun) an official who inflicts capital punishment in pursuit of a warrant | Synonyms: public executioner |
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| exhibitioner | (noun) someone who organizes an exhibit for others to see | Synonyms: exhibitor, shower |
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| extortioner | (noun) a criminal who extorts money from someone by threatening to expose embarrassing information about them | Synonyms: blackmailer, extortionist |
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| legionella | (noun) the motile aerobic rod-shaped Gram-negative bacterium that thrives in central heating and air conditioning systems and can cause Legionnaires' disease | Synonyms: Legionella pneumophilia |
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| lioness | (noun) a female lion | - |
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| lionet | (noun) a small or young lion | - |
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| marchioness | (noun) a noblewoman ranking below a duchess and above a countess | Synonyms: marquise |
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| (noun) the wife or widow of a marquis | - |
| marionette | (noun) a small figure of a person operated from above with strings by a puppeteer | Synonyms: puppet |
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| menadione | (noun) a synthetic chemical compound that is a form of vitamin K, it is an analog of 1,4-naphthoquinone with a methyl group in the 2-position | Synonyms: vitamin K3 |
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| mentioner | (noun) a speaker who refers to something briefly or incidentally | - |
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| missioner | (noun) someone sent on a mission--especially a religious or charitable mission to a foreign country | Synonyms: missionary |
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| parishioner | (noun) a member of a parish | - |
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| pensioner | (noun) the beneficiary of a pension fund | Synonyms: pensionary |
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| petitioner | (noun) one praying humbly for something | Synonyms: requester, suppliant, supplicant |
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| (noun) someone who petitions a court for redress of a grievance or recovery of a right | Synonyms: suer |
| phytonadione | (noun) a form of vitamin K, based on 2-methyl-1,4-naphthoquinone, with a 3-phytyl substituent | Synonyms: phylloquinone, vitamin K1 |
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| pioneer | (noun) one of the first colonists or settlers in a new territory | - |
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| (noun) someone who helps to open up a new line of research or technology or art | Synonyms: groundbreaker, innovator, trailblazer |
| positioner | (noun) (computer science) the actuator that moves a read/write head to the proper data track | Synonyms: rotary actuator |
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| (noun) a device used to control the opening or closing of the actuator based on electric, or pneumatic signals. | - |
| practitioner | (noun) someone who practices a learned profession | Synonyms: practician |
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| probationer | (noun) someone released on probation or on parole | Synonyms: parolee |
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| (noun) a nurse in training who is undergoing a trial period | Synonyms: student nurse |
| provisioner | (noun) a supplier of victuals or supplies to an army | Synonyms: sutler, victualer, victualler |
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| questioner | (noun) someone who asks a question | Synonyms: asker, enquirer, inquirer, querier |
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| reversioner | (noun) (law) a party who is entitled to an estate in reversion | - |
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| stationer | (noun) a merchant who sells writing materials and office supplies | Synonyms: stationery seller |
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| stationery | (noun) paper cut to an appropriate size for writing letters; usually with matching envelopes | Synonyms: letter paper |
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| vacationer | (noun) someone on vacation; someone who is devoting time to pleasure or relaxation rather than to work | Synonyms: vacationist |
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| zabaglione | (noun) light foamy custard-like dessert served hot or chilled | Synonyms: sabayon |
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