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tr.v. a·verred, a·ver·ring, a·vers
1. To affirm positively; declare: "Liberal politicians ... found it necessary to aver that they were in favor of rigid economy in public spending too" (John Kenneth Galbraith).
2. Law To assert formally as a fact.

[Middle English averren, from Old French averer, from Vulgar Latin *advērāre : Latin ad-, ad- + Latin vērus, true; see wērə-o- in Indo-European roots.]

a·ver′ment n.
a·ver′ra·ble adj.


able to be proved or verified
References in periodicals archive ?
Year over year, passenger numbers were up 8.3 percent, revenue passenger miles were up 5.7 percent and averrable seat miles were up 2.6 percent.