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to warn
01
to tell someone in advance about a possible danger, problem, or unfavorable situation
Transitive: to warn sb of a danger or problem | to warn sb about a danger or problem
Examples
The weather forecast warned residents of an approaching storm.
02
advise or counsel in terms of someone's behavior
Ditransitive: to warn sb to do sth | to warn sb against sth
Transitive: to warn against sth
Examples
The teacher warned the students not to plagiarize their assignments.
03
to inform or alert someone about something before it happens
Ditransitive: to warn sb that
Examples
The teacher warned the students that there would be a quiz the following day.
Lexical Tree
warner
warning
warning
warn
