What it means
なお is a formal adverb used to add supplementary information, often meaning “furthermore,” “in addition,” or “please note that.” It commonly appears at the beginning of a sentence in announcements, notices, reports, instructions, and other written or formal contexts. Although it can also mean “still” or “yet” in some contexts, that meaning usually expresses continuation of a state and must be distinguished from its supplementary use.
Usage note
なお is strongly associated with formal and written language and is not a natural choice for casual conversation. Do not automatically translate it as “still”; when it introduces additional information, “furthermore,” “in addition,” or “please note that” is more accurate.
Example sentences
図書館は改修工事のため来月三日から臨時休館します。なお、返却ポストは通常どおり利用できます。
The library will be temporarily closed for renovations starting on the third of next month. Furthermore, the return box can be used as usual.
申込書は今週金曜日までに郵送してください。なお、必要書類に不足がある場合は受け付けできません。
Please mail the application form by this Friday. Furthermore, applications cannot be accepted if any required documents are missing.