A person who lacks
intelligence.Can be at very age.It means the person doesnt have a lot of knowledge in different situations but mostly does actions which
normal people consider to be uncommon and not
responsible.Also they may find it difficult to obey a certain rule.
"I told her 3 times not to eat others
leftovers but she still doesnt understands it,she is
so stupid."
"She really got into
relationship with my ex...gosh she is stupid!