From Longman Dictionary of Contemporary Englishmystifymys‧ti‧fy /ˈmɪstɪfaɪ/ verb (mystified, mystifying, mystifies) [transitive]SOLVE/FIND THE ANSWERif something mystifies you, it is so strange or confusing that you cannot understand or explain it syn baffleHer disappearance has mystified her friends and neighbors. —mystifying adjectiveSnake charming is always fascinating and at times mystifying.→ See Verb table
Examples from the Corpus
mystify• They shook their heads, mystified.• She was mystified by my apparentsang-froid.• Detective Oakley was mystified. He had never seen such a strange set of evidence in the whole of his career.• Her disappearance has mystified her friends and neighbors.• Whether to mystify me once more or because there was no more to be said to a stranger, I couldn't tell.• Why you want to leave such a good job mystifies me.