Offtrack (adjective)

Not following the expected or intended course; deviating from the planned or expected path or route; not on the right track.

Origin:

derived from "off" meaning "away from" and "track" meaning "path or route", it was first recorded in the 19th century.

Examples:

1. The project went offtrack due to lack of funding.
2. The discussion went offtrack and the topic was changed.
3. The company's strategy went offtrack and they had to change direction.
4. The train went offtrack and had to be rerouted.
5. The athlete's performance went offtrack due to an injury.