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unable

[ uhn-ey-buhl ]
/ ʌnˈeɪ bəl /
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adjective
lacking the necessary power, competence, etc., to accomplish some specified act: He was unable to swim.
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Origin of unable

Middle English word dating back to 1350–1400; see origin at un-1, able

synonym study for unable

See incapable.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use unable in a sentence

British Dictionary definitions for unable

unable
/ (ʌnˈeɪbəl) /

adjective
(postpositive foll by to) lacking the necessary power, ability, or authority (to do something); not able
archaic incompetent
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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