upshift
up·shift
(ŭp′shĭft′)intr.v. up·shift·ed, up·shift·ing, up·shifts
To shift a motor vehicle into a higher gear.
up′shift′ n.
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.
upshift
(ʌpˈʃɪft)vb (tr)
(of vehicles) to move up a gear
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
up•shift
(ˈʌpˌʃɪft)v.t.
to shift (an automotive transmission or vehicle) into a higher gear.
[1950–55]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.