Of a statement or argument Not able to be proven false, but not necessarily true.
Conspiracy theories are designed to be unfalsifiable: every criticism can be dismissed as "whitewashing by the conspirers", and every concerns can be summarized as "part of the greater conspiracy".
Popper introduced the so-called ‘demarcation problem’ of identifying what distinguishes pseudoscience from science. Popper's suggestion, as I explain below, is that, unlike real science, pseudoscience is unfalsifiable.2019, Kevin McCain, Kostas Kampourakis, editors, What is Scientific Knowledge?, Routledge, →ISBN:
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Unfalsifiability: The main problem with any particular conspiracy theory is not that it's wrong, but that it's inarguable; not that it's false, but that it is unfalsifiable.2020, Maj Dr. Ebenezer Kwakye Agyemang (Rtd), DECODING 2019 NOVEL CORONAVIRUS: Outbreak: Conspiracies: Impact, page 153: