Unusual, unconventional, or idiosyncratic.

The quality of being unorthodox.

(literally) Any entrepreneur who uses unorthodox business practices / (by extension) Anyone who carries on an illegal business e.g. a drug dealer or prostitute

plural of unorthodox entrepreneur

(cricket) A style of bowling used by a left-handed bowler in which wrist spin is used to move the ball from off to leg (for a right-handed batsman).

In an unorthodox manner, unconventionally.

Lack of orthodoxy; the quality or state of being unorthodox

plural of unorthodoxy