undistinguished
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/ˌʌndɪˈstɪŋɡwɪʃt/
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/ˌʌndɪˈstɪŋɡwɪʃt/
lacking any special features or qualities that would make it stand out
He led an undistinguished life, never achieving any great success.
他過著平凡的生活,從未取得過任何偉大的成功。