Definition of muckety-muck in English:

muckety-muck

Syllabification: muck·et·y-muck
Pronunciation: /ˈməkətē ˌmək
 
/
(also mucky-muck /ˈməkē ˌmək/ or muck-a-muck /ˈmək ə ˌmək/)

noun

informal
  • A person of great importance or self-importance: a big Hollywood muckety-muck
    More example sentences
    • I can't help but think that if some of these stories had been obtained by one of our mainstream media muckety-mucks, it would be treated as a much bigger deal.
    • It includes the handy address of one of the muckety-mucks in the Church who actually can influence episcopal appointments.
    • A reader sends the following letter to the muckety-mucks at John Carroll University.

Origin

mid 19th century: from Chinook Jargon, shortening of high muck-a-muck.

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Pronunciation: skōSH
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a small amount; a little