<p><strong>Adjective</strong></p><ul><li>expressing or containing negation or denial: a negative response to the question.</li><li>refusing consent, as to a proposal: a negative reply to my request.</li><li>expressing refusal to do something: He maintained a negative attitude about cooperating.</li><li>prohibitory, as a command or order.</li><li>characterized by the absence of distinguishing or marked qualities or features; lacking positive attributes: a dull, lifeless, negative character.</li><li>lacking in constructiveness, helpfulness, optimism, cooperativeness, or the like: a man of negative viewpoint.</li><li>encouraging or noting an unhealthy or unbalanced outlook toward something, especially toward sex or sexuality (used in combination): The song has a body-negative message.</li><li>being without rewards, results, or effectiveness: a search of the premises proved negative.</li><li>Mathematics, Physics: involving or noting subtraction; minus.</li><li>measured or proceeding in the direction opposite to that which is considered as positive.</li><li>Photography: noting an image in which the brightness values of the subject are reproduced so that the lightest areas are shown as the darkest.</li><li>Electricity: of, relating to, or characterized by negative electricity.</li><li>indicating a point in a circuit that has a lower potential than that of another point, the current flowing from the point of higher potential to the point of lower potential.</li><li>Medicine/Medical: (of blood, affected tissue, etc.) failing to indicate the presence of a specified medical condition or substance.</li><li>(of a diagnostic test) failing to indicate the presence of the medical condition or substance tested for: Test results for skin cancer were negative.</li><li>(of a person) not having a specified medical condition, or not having a specified substance in the body (often used in combination): I'm Rh-negative.</li><li>Chemistry: (of an element or group) tending to gain electrons and become negatively charged; acid.</li><li>Physiology: responding in a direction away from the stimulus.</li><li>of, relating to, or noting the south pole of a magnet.</li><li>Logic: (of a proposition) denying the truth of the predicate with regard to the subject.</li></ul><p><strong>Noun</strong></p><ul><li>a negative statement, answer, word, gesture, etc.: The ship signaled back a negative.</li><li>a refusal of assent: to answer a request with a negative.</li><li>the negative form of statement.</li><li>a person or number of persons arguing against a resolution, statement, etc., especially a team upholding the negative side in a formal debate.</li><li>a negative quality or characteristic.</li><li>disadvantage; drawback: The plan is generally brilliant, but it has one or two negatives.</li><li>a negative test result: Her test for the infection was a negative.</li><li>Mathematics: a minus sign.</li><li>a negative quantity or symbol.</li><li>Photography: a negative image, as on a film, used chiefly for making positives.</li><li>Electricity: the negative plate or element in a voltaic cell.</li><li>Archaic: a veto, or right of veto: The delegation may exercise its negative.</li></ul><p><strong>Adverb</strong></p><ul><li>(used to indicate a negative response): “You won't come with us?” “Negative.”</li></ul><p><strong>Verb</strong></p><ul><li>(used with object): to deny; contradict.</li><li>to refute or disprove (something).</li><li>to refuse assent or consent to; veto.</li><li>to neutralize or counteract.</li></ul><p><strong>Interjection</strong></p><ul><li>(used to indicate disagreement, denial of permission, etc.): Negative, pilot—complete your mission as directed.</li></ul>