unresponsive

/ˌʌnrɪˈspɑnsɪv/
adjective
  1. Not reacting or answering; not giving a response.
    • The audience was unresponsive during the comedian's performance.
    • The patient was unresponsive after the accident, so the doctors rushed to help.
    • I emailed the company three times, but they remained unresponsive.
  2. Not showing emotion or interest; indifferent.
    • He sat unresponsive, staring blankly at the wall.
    • The dog was unresponsive to its owner's calls.
    • Her unresponsive attitude made it hard to have a conversation.
Synonyms
What does "unresponsive" mean? | whatsthatwordmean | whatsthatwordmean