You all know what a caret is, but only few of you know the word for it. A caret is the carrot-shaped symbol used to denote exponents or to make editorial changes (^), not to be confused with a circumflex. Since the caret was used for the latter purpose much longer than the former, the word comes from the Latin term caret, or "there is lacking". When a caret was added to put in more words, that statement was acknowledged as implied. This is a conjugated form of carere, or "to lack", which reportedly stems from the Proto-Italic cognate kazeo, ultimately from the familiar Proto-Indo-European root kes, or "to cut". The aforementioned Latin word carere, by the way, is also the source of the word caste, through castus, "separate in a pure way". The word caret should also not be confused with the caret package, a programming term which is the acronym for Classification and Regression Training. Those last two facts should've been added by caret.
Adam Aleksic, an incoming freshman at Harvard University, has been described as the internet's sixth most famous etymologist. He has disturbing interests in linguistics, vexillology, geography, board games, limericks, and law, and he loves writing about himself in the third person.
The Etymology Nerd