lastly UK /ˈlɑːstli/US /ˈlæstli/ adverb2 •Used to mark the beginning of the last in a list of items or propositions.Firstly, that's illegal; secondly, it has serious disadvantages; thirdly, it's not necessary; and lastly, did I mention that it's illegal? •Used to signal that the speaker is about to yield control of the conversation.
