oaf (?f)n. A person regarded as stupid or clumsy.[Old Norse alfr, elf, silly person; see albho- in Indo-European roots.]oaf?ish adj.oaf?ish·ly adv.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.oaf (??f) na stupid or loutish person[C17: variant of Old English ælf elf] ?oafish adj ?oafishly adv ?oafishness nCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014oaf (?f), n. 1. a crudely clumsy person; lout. 2. a stupid person; idiot. [1615?25; variant of auf, Middle English alfe, Old English ælf elf] oaf?ish, adj. oaf?ish?ly, adv. oaf?ish?ness, n. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.