Unintelligent

Tom is by no means unintelligent. He is just lazy.

If, on the other hand, children are left alone a great deal with nothing to do, they are likely to become dull and unintelligent.

Everybody is a slave to the current socioeconomic system that was invented through the years by unintelligent people.

The more unintelligent a man is, the less mysterious existence seems to him.

I think Tom is unintelligent.

Tom is unintelligent, isn't he?

You say it is acceptable for cows to suffer, because they are unintelligent.

Suffering is suffering, no matter how unintelligent the victim may be.

I am unintelligent, but at least I am intelligent enough to know it.

A person can be unintelligent, yet knowledgeable.