• adjective not switched on, not responding or not being used
  • adjective not erupting or likely to erupt, though not necessarily extinct
  • not ready for use, as in an unavailable communications channel.
  • Not currently functioning, as in a satellite which is not transmitting a signal at a given moment.
  • Not energized, as in a circuit that is not powered at the moment.
  • Chemically inert.

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