Lying only requires the action of the deceit. Intent is not required. It doesn't matter if you intended to lie (as to whether it's in fact a lie or not); if you

Lying only requires the action of the deceit. Intent is not required. It doesn't matter if you intended to lie (as to whether it's in fact a lie or not); if you lied, it's still a lie regardless of your intentions. If there is understanding of the deceit (such that the lie is intentional) then that applies a higher level of moral culpability to the intent, however understanding is not required to lie (you'd never reach the end of: how much exactly is required to be understood for it to be a lie - omnipotence). Things like intent and understanding are to assess responsibility.