(just) plain Mr/Mrs etcspoken used to show that someone does not have or use a special title （仅仅是）不带头衔[称号]的先生/夫人等〔用来表示某人没有或不使用特殊头衔等〕 I don’t call him Uncle – just plain Bill. 我不叫他叔叔，就叫他比尔。
(just) plain Mr/Mrs etc• And being Lord Aviemore is just like being plain Mr Aviemore, right?• Cluedo's Reverend Green is to become plain Mr Green to bring one of the country's best-loved board games up to date.
→ (just) plain Mr/Mrs etc at plain1(3)