Posit is a verb that means to propose an explanation. 

Our word of the day began as the Latin word for ‘placed,’ By the mid-17th century, it had placed itself in English as a word that specifically meant to place something as a proposed explanation. Here’s an example of posit in use:

It may seem obvious that the missing cookie from the cabinet was eaten by me, but I posit that the ants stole it away in the middle of the night. This explanation may seem far-fetched, but ants are known for their great strength, aren’t they?