As opposed to lying which is to assert a false statement knowing that it is untrue, with the intent to deceive.
Is there a related word for making a statement as if it were true, with the intent to deceive, except the individual is actually unaware of its truth value?
Alice: This news presenter looks under-dressed.
Bob: No he doesn't, they probably don't get to choose what they wear anyway, so even if he did, its not his fault.
Alice: They do get to choose what they wear.
Bob: You don't know that, you're word/phrase here.
Alice does not know, but in the strict sense of the term, she is not lying because she does not know the real truth value of her statement. She wants to 'win' this exchange by asserting a statement whose truth she is ignorant of.