unbrilliant

/ʌnˈbrɪljənt/
adjective
  1. Not very bright, intelligent, or impressive; mediocre.
    • The movie had an unbrilliant plot that failed to engage the audience.
    • His performance in the exam was unbrilliant, but he still passed.
    • She gave an unbrilliant speech that nobody remembered afterward.
Synonyms
What does "unbrilliant" mean? | whatsthatwordmean | whatsthatwordmean