chop·fall·en (ch?p?fô?l?n)adj. Variant of chapfallen.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.chopfallen (?t??p?f??l?n) adj a variant of chapfallenCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014chap?fall?en (?t??p?f? l?n, ?t?æp-) also chopfallen adj. dejected; dispirited. [1590?1600] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.