unfalsifiable adjective 1noun 1forms 1 adjective1 •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 concern can be summarized as "part of the greater conspiracy". noun1 •A statement or argument that cannot be proven false, but is not necessarily true. formsunfalsifiables