| airmail | (noun) a system of conveying mail by aircraft | Synonyms: airpost |
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| (noun) letters and packages that are transported by aircraft | - |
| airmailer | (noun) a mailer for airmail | - |
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| airman | (noun) a male who operates an aircraft | - |
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| airmanship | (noun) the art of operating aircraft | Synonyms: aviation |
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| chairman | (noun) the male officer who presides at the meetings of an organization | - |
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| chairmanship | (noun) the position of chairman | - |
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| impairment | (noun) damage that results in a reduction of strength or quality | - |
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| (noun) the act of making something futile and useless (as by routine) | Synonyms: constipation, deadening, stultification |
| (noun) the occurrence of a change for the worse | Synonyms: damage, harm |
| (noun) the condition of being unable to perform as a consequence of physical or mental unfitness | Synonyms: disability, disablement, handicap |
| (noun) a symptom of reduced quality or strength | Synonyms: deterioration |
| repairman | (noun) a skilled worker whose job is to repair things | Synonyms: maintenance man, service man |
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