chutzpah
Nearly arrogant courage; utter audacity, effrontery or impudence; supreme self-confidence; exaggerated self-opinion.
informal, uncountable
If the service is rotten and the meal a disaster, we should withhold a tip and explain why we are doing so. Few of us have the chutzpah to do this.
Where it comes from
Originated c. 1890–95 from Yiddish חוצפּה (khutspe), which was either borrowed via Medieval Hebrew or directly came from Aramaic חוּצְפָּא (ḥuṣpā, “audacity, boldness”), derived from חֲצַף (ḥăṣap̄, “to be impudent, arrogant”).
Adapted from the Wiktionary entry chutzpah (CC BY-SA 4.0).