not clear or bright; slow to understand; not exciting or interesting
unintelligent
without reason, sense or good judgement; silly
nonsensical, idiotic
(of a person) knowing little or nothing; resulting from lack of knowledge
unaware, unknowing
a foolish person; ( not now used) a person with very low intelligence
stupid, foolish
silly
stupid
giving no thought or care to something; not having or not requiring intelligence; not having a purpose
oblivious, stupid; automatic
foolish
silly, meaningless
unintelligent; foolish
not intelligent; irresponsible