be·wil·der. 1. To confuse or befuddle, especially by being complicated or varied.

What does it mean to disconcert someone?

transitive verb. 1 : to throw into confusion disconcerting their plans. 2 : to disturb the composure of were disconcerted by his tone of voice.

What does the word bewilder?

transitive verb. 1 : to cause to lose one's bearings (see bearing sense 6c) bewildered by the city's maze of roads. 2 : to perplex or confuse especially by a complexity, variety, or multitude of objects or considerations His decision bewildered her. utterly bewildered by the instructions.