unintelligent

/ˌʌnɪntˈɛlɪd‍ʒənt/

/ˌʌnɪntˈɛlɪdʒənt/

unintelligent

lacking the ability to understand, reason, or make good decisions

synonyms : stupid

Examples

1. The character in the book was unintelligent, as he was always making silly mistakes.

2. He's considered unintelligent because he struggles with basic math.

3. Going hiking without a map is an unintelligent action.

4. Although John was unintelligent in school, he later became successful in business.