Effective ɪˈfektɪv Long Prison Sentences Deterrent Offenders Highly

• long prison sentences can be a very effective deterrent for offenders.
• aspirin is a simple but highly effective treatment.
• drugs that are effective against cancer
• some people believe that violence is an effective way of protesting.

effective

1. producing the result that is wanted or intended; producing a successful result
• opposite ineffective
  https://www.oxfordlearnersdictionaries.com/definition/english/ineffective
• Long prison sentences can be a very effective deterrent for offenders.
• Aspirin is a simple but highly effective treatment.
• drugs that are effective against cancer
• Some people believe that violence is an effective way of protesting.
• I admire the effective use of colour in her paintings.
2. in reality, although not officially intended
• the effective, if not the actual, leader of the party
• In spite of what they are told, parents have no effective choice of schools.
• He has now taken effective control of the country.
3. coming into use
• The new speed limit on this road becomes effective from 1 June.

Extra Examples

• The drug is generally effective in reducing pain.
• This method is effective enough with greenfly.
• We find advertising on the radio very effective.
• What makes a TV programme politically effective?
• a highly effective technique
• directly effective treaty provisions
• effective at keeping out the wind
• effective in helping people to stop smoking
• He argued that long prison sentences could be a very effective deterrent for offenders.

Word Origin

• late Middle English: from Latin effectivus, from efficere ‘accomplish’, from ex- ‘out, thoroughly’ + facere ‘do, make’.