Law To assert formally as a fact.(verb-transitive)
Law To justify or prove.(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.
Use "aver" in a sentence
"The north of France, and not Germany as Germans aver, is the peculiar home of this noble form of art, which all the surrounding nations learn."
"But after fair translation of its old French body -- "aver" -- into English, and only "horse" is found, and the word becomes "horsage," the change tends to confusion."
"Mark_W @ 218: Anyone who can use "aver" correctly is probably going to fit right in here."