aver

From Middle English averren, from Old French averer, from Early Medieval Latin advērō, a verb derived from Latin vērus (“true”). Compare Modern French avérer.

From Middle English aver, avere (“workhorse; any beast of burden (?); things which are owned, possessions, property, wealth; state of being rich, wealth; ownership, possession”) [and other forms], and then either: from Old French aver, aveir, avoir (“possession, property; (collectively) beasts of burden; domestic animals; cattle”) (modern French avoir (“asset, possession”)), from aveir, avoir (“to have”), from Latin habēre (“to have, hold; to have, own (possessions)”), from Proto-Indo-European gʰeh₁bʰ-, *ǵʰeh₁bʰ- (“to grab, take”); or * from Old English eafor (“workhorse; tenant’s obligation to transport goods”), further etymology uncertain.