It has been said that ‘(as) right as a trivet’ an alteration of ‘(as) tight as a rivet’. But the latter phrase, which postdates the former, originally meant ‘extremely tight’, not ‘thoroughly or perfectly right’.
1988, Australia & USA—apathy, indifference or mental exhaustion arising from exposure to too much information—especially stress induced by the attempt to assimilate excessive amounts of information from the media, the Internet or at work
grim and ironical humour—UK, 1860, in reference to the practice of public executions—UK, 1870, as a loan translation from German ‘Galgenhumor’, in the context of the Franco-Prussian War
UK, 1929—a small camera for taking informal photographs of persons, usually without their knowledge—earlier occurrences (UK & USA, from 1907 to 1924) are often of unclear meaning
U.S. College slang, 1985—the effects of alcohol thought of metaphorically as a pair of goggles that alter a person’s perceptions especially by making others appear more attractive than they actually are
the quality or fact of being from New Zealand; characteristics regarded as typical of New Zealand or New Zealanders—coined in 1967 by the U.S. Professor of Psychology Eugene Leonard Hartley
chiefly Australian, 20th century—formula for estimating the size of rural holdings—also used figuratively of someone who talks boastfully without acting on their words