confuse

Etymology

Back formation from Middle English confused (“frustrated, ruined”), from Anglo-Norman confus, from Latin confusus, past participle of confundō.

verb

1. (transitive) to puzzle, perplex, baffle, bewilder (somebody); to afflict by being complicated, contradictory, or otherwise difficult to understand
   It confused me when I went to the office and nobody was there, but then I realised it was Sunday.
2. (transitive) To mix up, muddle up (one thing with another); to mistake (one thing for another).
   People who say "hola" to Italians are confusing Italian with Spanish.
3. (transitive) To mix thoroughly; to confound; to disorder.
4. (transitive, dated) To make uneasy and ashamed; to embarrass.
5. (transitive, obsolete) To rout; discomfit.
6. (intransitive) To be confused.