undismayed

/ˌʌndɪsˈmeɪd/
adjective
  1. Not discouraged or upset by something difficult or frightening; remaining calm and determined.
    • He remained undismayed despite the harsh criticism of his proposal.
    • The hikers were undismayed by the sudden storm and continued their climb.
    • Even after failing the first test, she was undismayed and studied even harder.
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