{
    "term": "effective",
    "partOfSpeech": "adjective",
    "ox3000": true,
    "cefr": "b1",
    "definitions": [
        {
            "senseNumber": 1,
            "definition": "producing the result that is wanted or intended; producing a successful result",
            "sensetop": "effective against something",
            "cefr": "b1",
            "ox3000": true,
            "examples": [
                {
                    "text": "Aspirin is a simple but **highly effective** treatment."
                },
                {
                    "text": "Some people believe that violence is an effective way of protesting."
                },
                {
                    "text": "an effective means/strategy/tool/method"
                },
                {
                    "text": "I admire the effective use of colour in her paintings."
                },
                {
                    "text": "The system has **proved** less **effective** than hoped."
                },
                {
                    "text": "drugs that are effective against cancer",
                    "contextForm": "effective against something"
                },
                {
                    "text": "Long prison sentences can be a very effective deterrent for offenders."
                },
                {
                    "text": "This method is effective enough with greenfly."
                },
                {
                    "text": "We find advertising on the radio very effective."
                },
                {
                    "text": "What makes a TV programme politically effective?"
                },
                {
                    "text": "a particularly effective technique"
                },
                {
                    "text": "effective at keeping out the wind"
                },
                {
                    "text": "effective in helping people to lose weight"
                },
                {
                    "text": "The vaccines will be safe and effective if used properly."
                }
            ],
            "topics": ["Success", "Change, cause and effect"],
            "collocations": {
                "verbs": ["be", "look", "prove"],
                "adverb": ["extremely", "fairly", "very"],
                "preposition": ["at", "in"]
            }
        },
        {
            "senseNumber": 2,
            "definition": "in reality, although not officially intended",
            "examples": [
                {
                    "text": "the effective, if not the actual, leader of the party"
                },
                {
                    "text": "In spite of what they are told, parents have no effective choice of schools."
                },
                {
                    "text": "He has now taken effective control of the country."
                }
            ]
        },
        {
            "senseNumber": 3,
            "definition": "coming into use",
            "labels": "(formal)",
            "examples": [
                {
                    "text": "The new speed limit on this road becomes effective from 1 June."
                }
            ],
            "collocations": {
                "verbs": ["be", "become", "remain"],
                "adverb": ["fully", "partially", "directly"]
            }
        }
    ],
    "pronunciations": {
        "uk": [
            {
                "pronunciation": "/ɪˈfektɪv/",
                "audio": "ef/effective/effective__gb_2.mp3"
            }
        ],
        "us": [
            {
                "pronunciation": "/ɪˈfektɪv/",
                "audio": "ef/effective/effective__us_3.mp3"
            }
        ]
    },
    "wordOrigin": "late Middle English: from Latin effectivus, from efficere ‘accomplish’, from ex- ‘out, thoroughly’ + facere ‘do, make’."
}