What part of speech is between?

The part of speech of the word between is typically a preposition in modern English (e.g., “I’ll call you between meetings”).

We generally prefer to use “in between” as the adverb (e.g., “I have appointments all morning, but I could give you a quick call in between”).

QuillBot’s free Grammar Checker will help you use “between” and “in between” correctly in your writing.