discomfit

verb3

1. •
   To embarrass (someone) greatly; to confuse; to perplex; to disconcert.

   • Don't worry. Your joke did not really discomfit me.
2. •
   (rare) To defeat the plans or hopes of; to frustrate; disconcert.

   • In these disguises, Maitland argued, he would certainly avoid recognition, and so discomfit any mischief planned by the enemies of Margaret. — 1886
3. •
   (no longer used) To defeat completely; to rout.

   • And Joshua discomfited Amalek, and his people, with the edge of the sword. — 1611