A split infinitive is a construction in the English language made by inserting an adverb or adverbial phrase between "to" and a verb in its infinitive form. One famous example is from the science fiction series Star Trek: "To boldly go where no man has gone before." Here, the infinitive verb form of "go" is "to go", and the adverb "boldly" has been inserted, creating a split infinitive. In the eighteenth and nineteenth centuries, some grammatical authorities argued that split infinitives should not be allowed in English, by an analogy with Latin, where they are usually impossible. Most authorities from the last 100 years, however, agree that this rule was mistaken, and indeed that splitting an infinitive can sometimes reduce ambiguity. Find out more...