Qualm is defined as a feeling of doubt or sickness.(noun)
Feeling nervous about accepting a new job is an example of a qualm.
See qualm in Webster's New World College Dictionary
Origin: ME qualme < OE cwealm, death, disaster (akin to Ger qual, pain, Swed kvalm, nausea) < base of cwellan, to kill (see quell): all extant senses show melioration of the orig. meaning
See qualm in American Heritage Dictionary 4
Origin: Origin unknown.
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