QUALM can be thought of as being the opposite of calm. Though not exactly true, this method is sure to give you some idea about the word. Qualm(-about something) is basically a feeling of doubt or worry about whether what you are doing is right .
Meaning of Qualm:
1. an uneasy feeling or pang of conscience as to conduct
2. a sudden feeling of apprehensive uneasiness;
Pronunciation: kwahm, kwawm
Sentence Examples for Qualm:
1. He had been working very hard so he had no qualms about taking a few days off.
2. Though initially confident, yesterday he had a sudden qualm about the success of the venture.