How many hypocorisms do you have? Which of them are your favorites? Are there any you would sooner never hear again?

I subscribe to one of those “word of the day” emails sent by services such as dictionary.com or thefreedictionary.com.

The truth is, more often than not I’m already familiar with the word they choose to define each day. However, when something hits me out of the proverbial blue—I am amazed and pause to ponder its meaning, history, and reasons why I may never have crossed its path before. (I imagine this behavior is widely replicated among word lovers.)

“Hypocorism” is one of those surprises. It had no place in my lexicon, although the concept of “pet names that are bestowed with affection” is something my family and I have always practiced.

I grew up being called Robbie, and as a young adolescent told my family I preferred to go by Rob. Rob is probably verbal shorthand for Robert, but Robbie is definitely hypocoristic. It is amusing to me that my beloved grandmother never ceased to call me Robbie—even though every precious letter I received from her while serving in the military far from home began, “Dear Robert.”

We’ve already noted the key aspect of a hypocorism. It is a name expressing endearment, not disrespect. That doesn’t mean, of course, that it is not embarrassing. Many people bestow pet names on their loved ones that are best shared only with family.

Some pet names are simply silly. Two of my granddaughters often call me “Bumpa.” That is not a reference to any lumpiness on my part, but to the way the eldest of them began pronouncing “Grandpa” when she was oh so tiny. It was cute, special, and passed on to her younger sister, at first through aural osmosis . . . and later through conscious affection.

C.S. Lewis’ family members were enthusiastic practitioners of hypocorism.

One of the things that new students of Lewis often find confusing is his own name. The fact that he was known to family and friends as “Jack” begs the question of the source of that name. The story, though oft told, remains quite entertaining.

The initial version of Lewis’ adopted name was Jacksie. Lewis loved dogs, and his stepson Douglas Gresham writes that Jacksie was one of these childhood animals.

When he was a small boy, he didn’t like the name [Clive] and soon changed it to “Jacksie” by simply refusing to answer to anything else. It was actually because of a small dog that he was fond of that he picked the name Jacksie, which was what the dog was called. It was run over (probably by a horse and cart as there were almost no cars at the time and place where he was a child), and Jack, as he later became known, just took the name for himself. (Jack’s Life)

I have shared in the past how Lewis’ brother Warnie [Warren] related the event.

Then, in the course of one holiday, my brother made the momentous decision to change his name. Disliking “Clive”, and feeling his various baby-names to be beneath his dignity, he marched up to my mother, put a forefinger on his chest, and announced “He is Jacksie.”

He stuck to this next day and thereafter, refusing to answer to any other name: Jacksie it had to be, a name contracted to Jacks and then to Jack. So to his family and his intimate friends, he was Jack for life: and Jack he will be for the rest of this book.

Lewis’ life was filled with other hypocorisms. One of the most curious was the nick name “Minto,” given to Janie Moore. Mrs. Moore and her daughter were supported in his home by Lewis after her son Paddy had been killed in WWI. The two men had pledged that if only one survived, he would care for the other’s widowed parent. Lewis kept that promise.

As you reflect on the pet names that you share with those you love, you are in good company. An affectionate hypocorism is a truly precious gift.