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Phrase(s): *off course
1. Lit. not going in the right direction. (*Typically: be ~; drift ~; get ~.) • The ship is off course and may strike the reef! 2. Fig. not following the plan correctly. (*Typically: be ~; get ~.) • The project is off course and won’t be finished on time. • I am off course and doing poorly.
McGrawhill's American Idioms And Phrasal Verbs