-ency

-ency

suff.
Condition or quality: complacency.
[Middle English, variant of -ence, -ence.]
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.

-ency

suffix forming nouns
a variant of -ence: fluency; permanency.
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

-ency

a noun suffix, equivalent to -ence: consistency; dependency; exigency.
(-ence + -y3]

ency.

or encyc.

or encycl.,

encyclopedia.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.