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intr.v. quaked, quak·ing, quakes
1. To shake or tremble, as from instability or shock.
2. To shiver or shudder, as with cold or from strong emotion. See Synonyms at shake.
1. An instance of quaking.
2. An earthquake.
[Middle English quaken, from Old English cwacian.]
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.
unstable or unsafe to walk on, as a bog or quicksand: a quaking bog; quaking sands.
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014