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[ruhf-uh n] /ˈrʌf ən/
verb (used with object), verb (used without object)
to make or become rough or rougher.
Origin of roughen
1580-90; rough + -en1
Related forms
roughener, noun
unroughened, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for roughen
  • After the first coat hardens approximately one hour, the surface is scratched with the edge of the trowel to roughen it.
  • roughen surface of each layer to provide key for the next.
  • Prior to application, roughen embankment and fill areas by rolling with a crimping or punching type roller or by track walking.
  • The purpose of abrading is to roughen the surface, not to remove a significant amount of galvanizing.
  • roughen wood with coarse sandpaper and soak it in a pot of melted wax for repellency.
  • It is important that the texturing equipment not tear or unduly roughen the pavement surface during the operation.
  • roughen surface of each layer to provide key for next.
  • But these tools also can roughen the silicon surface.
British Dictionary definitions for roughen


to make or become rough
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for roughen

1580s, from rough (adj.) + -en (1). Related: Roughened; roughening.

Online Etymology Dictionary, © 2010 Douglas Harper
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