coup de main - noun
kü-də-ˈmaⁿ
Definition of coup de main : an attack that achieves complete surprise.

Watch: Taylor Swift performs 'Betty' live at the 2020 ACM Awards.

Taylor Swift returned to the ACM Awards tonight (for the first time in seven years) with a performance of 'folklore' song 'Betty' at Nashville's Grand Ole Opry for the 2020 ceremony.

Watch the performance below...