flummox

/ˈflʌməks/
verb
  1. To confuse or bewilder someone so that they do not know what to do.
    • The complicated instructions completely flummoxed the new student.
    • The tricky puzzle flummoxed even the smartest players in the room.
    • I was flummoxed by the sudden change in the meeting schedule.
Antonyms
What does "flummox" mean? | whatsthatwordmean | whatsthatwordmean