Definition of “deter” - English Dictionary

“deter” in British English

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deterverb [ T ]

uk /dɪˈtɜːr/ us /dɪˈtɝː/ -rr-

(Definition of “deter” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“deter” in American English

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deterverb [ T ]

us /dɪˈtɜr/ -rr-

to prevent or discourage someone from doing something:

High prices are deterring a lot of young couples from buying houses.
deterrent
noun [ C ] us /dɪˈtɜr·ənt, -ˈter-/

The company says this alarm is an effective deterrent against theft.

(Definition of “deter” from the Cambridge Academic Content Dictionary © Cambridge University Press)

“deter” in Business English

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deterverb [ T ]

uk /dɪˈtɜːr/ us -rr-

to prevent someone from doing something or to make someone less enthusiastic about doing something:

deter sb from doing sth High prices deter many young people from entering the property market.
People said he was foolish to start his own business, but he didn't let that deter him.

(Definition of “deter” from the Cambridge Business English Dictionary © Cambridge University Press)