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Phrase(s): on probation
1. Lit. serving a period of probation, typically after conviction for a crime. • While Anne was on probation, she reported to the police regularly. • John was on probation for a year. 2. Fig. serving a trial period. • All new members are on probation for a year. • I was on probation in my job for a full year before it became permanent.
McGrawhill's American Idioms And Phrasal Verbs