what is the exact meaning of the word silly? an Amercian said this: X is not one of those silly dogs. i thought his comment on the other dogs is negative. but he said that i didn't understand what the word silly means there. he said there is no word in chinese could express this word silly. he told me that silly is not a negative word and silly means playful. but i think silly means not smart, but not as strong as stupid. so please tell me what the silly means in this sentence. is silly not a negative word here? thank you very much!