unintelligent
1. [ adjective ] without much intelligence
Synonyms: stupid
Examples:

"a dull job with lazy and unintelligent co-workers"

Related terms: intelligent moronic brainless imbecile feebleminded feebleminded stupid retarded intelligence
Similar spelling:   unintelligently
  unintelligible
  unintelligibly
  unintentional
  unintended
  unintentionally
  unintegrated