ご存知・ご存じ・御存知・御存じ|ごぞんじgozonji[2]nakadaka (mid-high)

1. nounknowing; being aware (of)
   ご存知ぞんじだとは思おもいますが、クオーターしかつかえませんよ。↗

   This only takes quarters, you know.
2. noun(an) acquaintance

• Related知り合いしりあいNeutralA person you know; covers the acquaintance sense of 「ご存知」 but carries no honorific respect, as in 「知り合いの店」.
• Related近づきちかづきNeutralAn acquaintance, or the act of getting to know someone, as in 「近づきになる」; rarely used on its own.
• Related知人ちじんNeutralSomeone you know, as in 「知人の紹介」; slightly more formal than 「知り合い」.
• Related顔見知りかおみしりCasualColloquial word for someone you have met before, as in 「顔見知り程度」; the relationship stays shallow.
• Related知己ちきWrittenWritten style: a close friend who understands you, or an acquaintance generally, as in 「十年来の知己」; more literary than 「知り合い」.
• Relatedお近づきおちかづきNeutralA polite way to speak of getting acquainted, as in 「お近づきの印に」; mostly used in greetings when meeting someone for the first time.
• Related知る辺しるべWrittenA written, old-fashioned word for an acquaintance one can rely on, as in 「知る辺を頼る」.
• Related相識そうしきWrittenA written word for mutual acquaintance or someone you know; very rare — say 「知り合い」 in everyday speech.
• Related見知りみしりNeutralKnowing someone by sight; seldom used alone. Note that 「人見知り」 is a different word meaning shyness with strangers.
• Related知音ちいんWrittenA written term for a bosom friend who truly understands you, carrying a classical, allusive flavor.
• Related知り人しりびとWrittenAn old-fashioned written way to say acquaintance; nowadays 「知人」 is the usual word.
• Antonym不知ふちWrittenThe written-style opposite of 「ご存知」: not knowing, or ignorance.
• Antonym知らずしらずCasualThe colloquial opposite of 「ご存知」: not knowing; mostly in compounds like 「世間知らず」.
• Antonym御無知FormalNot a standard word; given here for the sense of not knowing. The normal honorific negative is 「ご存じない」.

Use 「ご存知」 as the honorific for knowing. For acquaintances say 「知り合い」, or the slightly more formal 「知人」; 「顔見知り」 is for people you have merely met. Use 「お近づき」 in first-meeting pleasantries and 「知己」 for a close friend who understands you. To say someone does not know, use 「ご存じない」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 「存ぞんじ（知しっていること）」の丁寧ていねい語ご。御承知ごしょうち。お知り合しりあい。