おなじみ・お馴染み・御馴染みonajimi

1. no-adjectivefamiliar; well-known; regular (e.g. customer); favourite; favorite
   その物語ものがたりはおなじみである。↗

   The tale is familiar to us.
2. nounold acquaintance; old friend; (a) regular; regular customer

• Synonym常連じょうれんNeutralCovers regular customers, as in 「常連客」; it centers on people who come often and does not describe well-known things.
• Synonym馴染みなじみNeutralThe form without 「お」; refers to familiarity itself, as in 「馴染みの店」. 「お馴染み」 carries a warmer, more polite feel.
• Synonym常客じょうきゃくWrittenA written, formal term for regular customers, close to 「常連」; not used for familiar things.
• Synonymなじみ客なじみきゃくNeutralA familiar customer with a warm feel; works for shops, restaurants and the like, and centers on the shop-customer relationship.
• Antonym疎遠そえんNeutralAn antonym: estrangement, with contact cut off; the opposite of the familiar, close 「お馴染み」.

Use 「お馴染み」 for people or things everyone knows well, as in 「お馴染みのメンバー」「お馴染みのCM」; for a shop's regulars, 「常連」 is the usual pick.

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

1. よく知しられていて、親したしみやすいこと。
2. 昔むかしからの知り合しりあい。いつも来くる客きゃくなどの常連じょうれん。