Here is a context clues on the verb collaborate. The context in the sentences in this half-page document seek to prompt students to understand that this verb–used only intransitively, apparently–means “to work jointly with others or together especially in an intellectual endeavor.”
If you find typos in this document, I would appreciate a notification. And, as always, if you find this material useful in your practice, I would be grateful to hear what you think of it. I seek your peer review.