{
    "term": "react",
    "partOfSpeech": "verb",
    "academic": true,
    "ox3000": true,
    "cefr": "a2",
    "verbForms": {
        "presentSimple": {
            "iYouWeThey": "react",
            "heSheIt": "reacts"
        },
        "pastSimple": "reacted",
        "pastParticiple": "reacted",
        "ingForm": "reacting"
    },
    "definitions": [
        {
            "senseNumber": 1,
            "definition": "to change or behave in a particular way as a result of or in response to something",
            "sensetop": "react to somethingreact by doing somethingreact to something by doing somethingreact with something",
            "cefr": "a2",
            "ox3000": true,
            "examples": [
                {
                    "text": "I nudged her but she didn't react."
                },
                {
                    "text": "You never know how he is going to react."
                },
                {
                    "text": "He would have reacted in the same way."
                },
                {
                    "text": "Local residents have **reacted angrily** to the news.",
                    "contextForm": "react to something"
                },
                {
                    "text": "The market reacted by falling a further two points.",
                    "contextForm": "react by doing something"
                },
                {
                    "text": "The army has reacted to the situation by increasing investment in recruitment.",
                    "contextForm": "react to something by doing something"
                },
                {
                    "text": "Her family reacted with horror when she told them.",
                    "contextForm": "react with something"
                },
                {
                    "text": "Residents have reacted with fury to the news."
                },
                {
                    "text": "His insensitive remarks hurt and she reacted accordingly."
                },
                {
                    "text": "The committee reacted positively to the proposals."
                },
                {
                    "text": "The government reacted by increasing taxation."
                },
                {
                    "text": "The industry has been slow to react to these breakthroughs in technology."
                },
                {
                    "text": "The police must be able to react swiftly in an emergency."
                },
                {
                    "text": "people who react positively to change"
                }
            ],
            "topics": ["Change, cause and effect"],
            "collocations": {
                "adverb": ["strongly", "favourably/​favorably", "positively"],
                "verb + react": ["tend to", "be slow to", "not know how to"],
                "preposition": ["against", "by", "to"]
            }
        },
        {
            "senseNumber": 2,
            "definition": "to become ill after eating, breathing, etc. a particular substance",
            "sensetop": "react + adv.react (+ adv.) to something",
            "cefr": "b1",
            "ox3000": true,
            "examples": [
                {
                    "text": "Some patients may react adversely.",
                    "contextForm": "react + adv."
                },
                {
                    "text": "People can react badly to certain food additives.",
                    "contextForm": "react (+ adv.) to something"
                },
                {
                    "text": "People react differently to these drugs."
                }
            ],
            "topics": ["Health problems"],
            "collocations": {
                "adverb": ["strongly", "favourably/​favorably", "positively"],
                "verb + react": ["tend to", "be slow to", "not know how to"],
                "preposition": ["against", "by", "to"]
            }
        },
        {
            "senseNumber": 3,
            "definition": "to experience a chemical change when coming into contact with another substance",
            "sensetop": "react with somethingreact together",
            "labels": "(chemistry)",
            "cefr": "b2",
            "examples": [
                {
                    "text": "Silicon reacts chemically like carbon."
                },
                {
                    "text": "Iron reacts with water and air to produce rust.",
                    "contextForm": "react with something"
                },
                {
                    "text": "When an acid and an alkali react together the result is a salt and water.",
                    "contextForm": "react together"
                }
            ],
            "topics": ["Physics and chemistry"],
            "collocations": {
                "adverb": ["strongly", "favourably/​favorably", "positively"],
                "verb + react": ["tend to", "be slow to", "not know how to"],
                "preposition": ["against", "by", "to"]
            }
        }
    ],
    "pronunciations": {
        "uk": [
            {
                "pronunciation": "/riˈækt/",
                "audio": "re/react/react__gb_1.mp3"
            },
            {
                "pronunciation": "/riˈækts/",
                "audio": "re/react/reacts__gb_1.mp3"
            },
            {
                "pronunciation": "/riˈæktɪd/",
                "audio": "re/react/reacted__gb_1.mp3"
            },
            {
                "pronunciation": "/riˈæktɪŋ/",
                "audio": "re/react/reacting__gb_1.mp3"
            }
        ],
        "us": [
            {
                "pronunciation": "/riˈækt/",
                "audio": "re/react/react__us_1.mp3"
            },
            {
                "pronunciation": "/riˈækts/",
                "audio": "re/react/reacts__us_1.mp3"
            },
            {
                "pronunciation": "/riˈæktɪd/",
                "audio": "re/react/reacted__us_1.mp3"
            },
            {
                "pronunciation": "/riˈæktɪŋ/",
                "audio": "re/react/reacting__us_1.mp3"
            }
        ]
    },
    "wordOrigin": "mid 17th cent.: from re- (expressing intensive force or reversal) + act, originally suggested by medieval Latin react- ‘done again’, from the verb reagere."
}