Unorthodox means not following the usual or accepted way. An unorthodox method, unorthodox tactics, an unorthodox career.
It is neutral to admiring and usually implies the method worked anyway, which is what separates it from simply wrong. Orthodox comes from Greek for right belief, so unorthodox literally names a departure from what everybody else holds.
1adjectiveunorthodoxNot following the usual or accepted way.
“The coach's unorthodox training methods included ballet lessons for the football players.”
unorthodox is a quality.
From un- + orthodox.
Etymology from Wiktionary, CC BY-SA