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unioneer

noun
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un·​ion·​eer | \ ¦yünyə¦ni(ə)r, -iə \
plural -s

Definition of unioneer

: a member or advocate of a union especially : a labor union executive

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“Unioneer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unioneer. Accessed 22 Sep. 2020.

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