last but not least

Rhetoric: A possible/common pattern to arrange a speech or essay suggests putting your strongest and thus most important argument favoring your own opinion first and conclude with the weakest, thus least important argument.

• IPA^(key): /ˈlæst bʌt nɑt ˈlist/ (US)
• IPA^(key): /ˈlɑːst bʌt nɒt ˈliːst/ (UK)

• Audio (US)

  (file)

last but not least often followed by a comma

1. An expression to start the last item of a list, emphasising that while it is listed last, it is just as important as the rest of the items.

• and of course