Definition of "iconoclastic"

I pose the iconoclastic suggestion that even at this late stage in B.R. dieselisation, rigid standardisation might be a shibboleth.

1964 May, R. & M., “What chance for an outstanding prototype?”, in Modern Railways, page 319

Harnessing its cultural cachet is not without problems, because some of these artists—true to their iconoclastic nature—resist being boxed in, dictated to or otherwise controlled.

2015 May 10, David Gonzalez, “Street Artists and a Bottled Water Company Clash Over a Hashtag”, in The New York Times‎

“Hans Linde was an iconoclastic, original thinker, whose innovative ideas that state constitutions might afford greater protections than the federal Constitution, and that courts need to have an understanding of the legislative and administrative processes, are now conventional wisdom,” Judge Robert A. Katzmann of the United States Court of Appeals for the Second Circuit, in New York, said in an email.

2020 September 2, Adam Liptak, quoting Robert A. Katzmann, “Hans A. Linde, Iconoclastic Legal Scholar, Dies at 96”, in The New York Times‎