An exclamation of surprise.

(invoking God, offensive to some) An expression of surprise, astonishment, shock, dismay, supplication, or consternation.

Alternative form of God knows, in sense of something unknown to mortal men.

(UK) Used in direct address to dukes, now chiefly in correspondence.

plural of my Lord Duke

The Lord High Commissioner to the General Assembly of the Church of Scotland, the representative of the Scottish (later British) monarch to the established church of Scotland appointed annually since 1690.

plural of Lord High Commissioner

(UK, Christian) Used in direct address to 24 bishops of the Church of England comprising the Lords Spiritual, apart from the archbishops of Canterbury and York.

plural of my Lord Bishop

The senior Royal Navy officer and a member of the Ministry of Defence.