To make obsolete or old-fashioned.(verb-transitive)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
"Baltimore, and which was to antiquate the "American System" over which"
"We have two accounts; one of which represents the pseudo-Rowley rubbing a parchment upon a dirty floor after smearing it with ochre and saying 'that was the way to antiquate it'; the other, even more explicit, is the testimony of a local chemist, one Rudhall, who was for some time a close friend of Chatterton's."