muck
noun
moist farmyard dung, decaying vegetable matter, etc.; manure.
Used to describe an action that began in the past, has continued continuously, and is still in progress.
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This much is not news to physicists, who have been mucking around in the quantum world for more than a century and are mostly unbothered by the crumbling edifice of reality.
From Scientific American ● May 6, 2021