What is the meaning of negative?

noun

• A reply of denial.
  • usage: "he answered in the negative"
• A piece of photographic film showing an image with light and shade or colors reversed.

verb

• Vote against; refuse to endorse; refuse to assent.
  • usage: "The President vetoed the bill"
  • synonyms: veto, blackball

adjective

• Characterized by or displaying negation or denial or opposition or resistance; having no positive features.
  • usage: "a negative outlook on life"; "a colorless negative personality"; "a negative evaluation"; "a negative reaction to an advertising campaign"
• Expressing or consisting of a negation or refusal or denial.
• Having the quality of something harmful or unpleasant.
  • usage: "ran a negative campaign"; "delinquents retarded by their negative outlook on life"
• Not indicating the presence of microorganisms or disease or a specific condition.
  • usage: "the HIV test was negative"
  • synonyms: disconfirming
• Reckoned in a direction opposite to that regarded as positive.
  • usage: "negative interest rates"
• Less than zero.
  • usage: "a negative number"
• Designed or tending to discredit, especially without positive or helpful suggestions.
  • usage: "negative criticism"
  • synonyms: damaging
• Having a negative charge.
  • usage: "electrons are negative"
  • synonyms: electronegative, negatively charged
• Involving disadvantage or harm.
  • usage: "minus (or negative) factors"
  • synonyms: minus