One of the mysteries of the English language finally explained.
1Of a person: having all sides or aspects of one's character or intellect well or fully developed; displaying accomplishment and skill in all types of pursuit, or great breadth of vision or learning.
2That concerns or involves all sides of something, especially a question, matter, argument, etc.
Mid 19th century; earliest use found in Sarah Austin (1793–1867), translator and writer. From all + side + -ed, originally (and in early use chiefly) after German allseitig.
In this article we explore how to impress employers with a spot-on CV.