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tag·a·longalso tag-a·long (tăg′ə-lông′, -lŏng′)
One that persistently follows another: "Technological change separates the innovators from the tag-alongs" (Thomas G. Exter).
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.
someone who trails behind, esp uninvited; a hanger-on
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
tag•a•long(ˈtæg əˌlɔŋ, -ˌlɒŋ)
a person that follows the lead or initiative of another.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.