YOU SAID:
Charlie is not extremely smart, to be honest
INTO JAPANESE
正直に言って、チャーリーはあまり賢くない
BACK INTO ENGLISH
To be honest, Charlie is not very smart
INTO JAPANESE
正直に言うと、チャーリーはあまり賢くない
BACK INTO ENGLISH
To be honest, Charlie is not very smart
That didn't even make that much sense in English.