Other forms: mystified, mystifying, mystifies
To mystify is to puzzle somebody completely. It mystifies me, mystified by the result, a mystifying decision.
The participle is the commonest form, and I am mystified is a polite way of saying the decision made no sense. It implies bafflement rather than annoyance, though the two often travel together.
1verbmystifyTo puzzle somebody completely.
“The magician's final trick mystified the whole audience.”
mystify is a puzzling.
French mystifier is built on Greek mystikos, secret or mystic, plus a Latin ending meaning to make.
Latin
-ficare
Ancient Greek
μυστικός — secret, mystic
French
mystifier
English, today
mystify
From French mystifier, from Ancient Greek μυστικός (“secret, mystic”) + Latin -ficare.
Etymology from Wiktionary, CC BY-SA