A foolish or uninformed person

एक बेवकूफ या अज्ञान व्यक्ति

English Usage: “Don't be such a cabbagehead, you should know that by now.”

Hindi Usage: "ऐसे ही बेवकूफ मत बनो, तुम्हें तो ये अब तक पता होना चाहिए।"