warn (someone) against (something)

Translations
предостеречь (кого-то) от (чего-то)
Doctors warn patients against smoking.
Врачи предостерегают пациентов от курения.
Definitions
To advise someone not to do something or to be cautious about a particular action or situation, often due to potential danger or negative consequences.
Words
warn

verb
предупреждать
someone

pronoun
кого-то
against

preposition
против
something

pronoun
чего-то