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1. Susceptible, capable, or worthy of a specified action: debatable.
2. Inclined or given to a specified state or action: changeable.
[Middle English, from Old French, from Latin -ābilis, -ibilis : -ā- and -i-, thematic vowels + -bilis, adj. suff.]
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.
suffix forming adjectives
1. capable of, suitable for, or deserving of (being acted upon as indicated): enjoyable; pitiable; readable; separable; washable.
2. inclined to; given to; able to; causing: comfortable; reasonable; variable.
[via Old French from Latin -ābilis, -ībilis, forms of -bilis, adjectival suffix]
-ably suffix forming adverbs
-ability suffix forming nouns
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
adj. a•bler, a•blest.
1. having the necessary power, skill, resources, or qualifications to do something: able to read music; not able to vote.
2. having or showing unusual talent, intelligence, skill, or knowledge: an able leader.
[1275–1325; Middle English < Middle French < Latin habilis easy to handle, adaptable =hab(ēre) to have, hold + -ilis -ile1]
a suffix meaning “capable of, susceptible of, fit for, tending to, given to,” associated in meaning with the word able, occurring in loanwords from Latin (laudable); used in English to form adjectives from stems of any origin (teachable; photographable).Compare -ble, -ible.
[Middle English < Old French < Latin -ābilis]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.