Confuse
Bewilder
Synonyms: Bewilder, mystify, perplex, confound, nonplus, throw, flummox, confusticate, stump, fox, fog, wilder, maze, distract, obfuscate, baffling, unclear, puzzling, mysterious, ambiguous, inconsistent, unaccountable, impenetrable, above one's head, complex, involved, convoluted, Byzantine, baffle, bemuse, puzzle, befog, disconcert, set someone thinking, discombobulate, faze, beat, floor, buffalo, gravel, cause to be at a stand, pose, bewildering, difficult (to understand), perplexing, mystifying, disconcerting, misleading, contradictory, inexplicable, unfathomable, beyond one, complicated, intricate, labyrinthine, and wildering.
Complicate
Synonyms: Complicate, jumble, make complex, blur, make unclear, obfuscate, muddle, garble, make (more) difficult, obscure, cloud, and embroil.
Mix up
Synonyms: Mix up, confound, mistake for, muddle up, misinterpret as, and take for.
Example Sentences
The instructions confuse me every time.
His response seemed to confuse everyone.
The similar names confuse the students.
Complex sentences can confuse readers.
Don’t confuse me with details.