unsafe - definition and synonyms

adjective 

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/ʌnˈseɪf/
adjectiveunsafe
comparativeunsafer
superlativeunsafest
  1. 1
    dangerous

    The heating systems were unsafe to use.

    unsafe levels of radiation

    I feel unsafe walking around this neighbourhood.

  2. 2
    involving a lot of risk, for example the risk of losing something or of being harmed

    an unsafe investment

  3. 3
    unsafe sex is sex that people have without protecting themselves against diseases or the possibility of becoming pregnant
  4. 4
    legal British not based on reliable evidence

    The Court of Appeal ruled that the conviction was unsafe.