unenlightening
/ˌʌnɪnˈlaɪtənɪŋ/
adjective
- Failing to provide useful information, insight, or understanding; not educational.
- The lecture was unenlightening, repeating facts everyone already knew.
- She found the documentary unenlightening and turned it off halfway through.
- His unenlightening response did nothing to answer the student's question.
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