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1. An uneasy feeling about the propriety or rightness of a course of action: "an ignorant ruffianly gaucho, who ... would ... fight, steal, and do other naughty things without a qualm" (W.H. Hudson).
2. A sudden disturbing feeling: "I heard with a qualm of terror the faint, remorseless sound of a telephone ringing somewhere down in the depths of the house" (John Banville).
3. A sudden feeling of sickness, faintness, or nausea.
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.
qualm•ish(ˈkwɑ mɪʃ, ˈkwɔ-)
1. having or tending to have qualms.
3. of the nature of a qualm.
4. likely to cause qualms.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.