adj.to be unfamiliar (with), to be unskilled, to be poor (at)
Mnemonic
So tour the castle with a guide if you are unfamiliar with it.
Accepted Answers
서투르다poorbe poorpoor atunskilledbe poor atto be poorunfamiliarbe unskilledbe unfamiliarto be poor atto be unskilledunfamiliar withto be unfamiliarbe unfamiliar withto be unfamiliar with