to tell someone about a possible risk, harm, danger or unpleasant situation I have warned you against this course of action.
to threaten someone, a business entity or an institution with punishment for a wrongful action A High Court judge has warned banks not to behave unreasonably when customers sue for unlawful charges.
- The product warned of potential harm.
- The arbitrator warned of further damage if the matter was not resolved quickly.
- The attorney was warned by the court.