noun Chiefly British.
Words That Are Older Than You ThinkThe first citation of "OMG" in the Oxford English Dictionary appears in a 1917 letter from the British admiral John Arbuthnot Fisher to Winston Churchill.
Origin of old fellow
First recorded in 1810–20
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for old fellow
Then Old-fellow Badger turned round and went lumbering back.The King of Ireland's Son|Padraic Colum