I saw a generalization early this morning that got my dander up. The writer stated that “almost every style guide” says to avoid the split infinitive. To put it bluntly, that’s wrong; it’s a misrepresentation of what they actually say. That the post went on to explain and clarify doesn’t much matter when what people will remember is that initial statement: “Almost every style guide” says not to use it.
I’ve looked up “split infinitive” in The Chicago Manual of Style (Chicago, the style guide I use) and on the website for AP, and then I checked Buzzfeed for good measure. After that, I went to the usage guides: Merriam-Webster’s Dictionary of English Usage, Garner’s Modern English Usage, Dreyer’s English (Dreyer), Words into Type, and Fowler’s Dictionary of Modern English Usage.
Not one of these sources says that a split infinitive is to be avoided at all times. In fact, every one of them says that not only is the construction grammatically correct, but it is also preferable to performing syntactical gyrations. There’s no reason to avoid using it when that usage is the clearest and changing it would alter the intended meaning of the sentence.
Furthermore, I’ll note here that the APA style manual, 7th edition, does not even mention split infinitives. As I said to someone in a Slack chat earlier, “APA does not recognize this as a problem.” (Yes, I was being snarky. Imagine that. Thank you to my colleagues DeAnna Burghart and James Fraleigh for being my reference checkers.) Rather, the manual refers users to “a trusted grammar reference” for questions about issues not covered. Which reference? That’s users’ choice.
The only place one might routinely consider avoiding the split infinitive is in the most formal writing, where the most readers are likely to think poorly of its presence (because they’re not grammarians, obviously). Annoying one’s intended audience is seldom if ever the best option.
I will quote only one source here, that being Chicago:
“Although from about 1850 to 1925 many grammarians stated otherwise, it is now widely acknowledged that adverbs sometimes justifiably separate the to from the principal verb.” (Chicago 17th ed., 5.108)
“If the adverb bears the emphasis in a phrase {to boldly go} {to strongly favor}, the split infinitive is justified and often even necessary. . . . Recasting a sentence just to eliminate a split infinitive or to avoid splitting the infinitive can alter the nuance or meaning of the sentence.” (5.171)
The style guide most used by journalists, the venerated AP text, changed its guidance in 2019 in an admission that the split infinitive can aid comprehension and readability.
Of the usage guides, I will quote only from Dreyer, and that itself is a quote from Raymond Chandler:
“By the way, would you convey my compliments to the purist who reads your proofs and tell him or her that I write in a sort of broken-down patois which is something like the way a Swiss waiter talks, and that when I split an infinitive, God damn it, I split it so it will stay split.” (Dreyer, 1st ed., p. 11)
I can say without reservation that we are free to confidently split infinitives without fear of repercussions.