jolly well

We never had a Christmas in the country before. It was simply ripping. And […] we had games and charades, and hide-and-seek, and Devil in the Dark, which is a game girls pretend to like, and very few do really, and crackers and a Christmas-tree for the village children, and everything you can jolly well think of.

1904, E[dith] Nesbit, “(please specify the page)”, in New Treasure Seekers, London: Ernest Benn, →OCLC

"Oh, I shall pull it off. I shall jolly well have to succeed," said Michael light-heartedly; feeling unusually confident.

1920, Eric Leadbitter, Rain Before Seven, page 122

Adrian thought it worth while trying out his new slang. […] ‘That’s beastly talk, Thompson. Jolly well take it back or expect a good scragging.’

1991 September, Stephen Fry, chapter 1, in The Liar, London: Heinemann, →ISBN, section III, page 26

For most main lines, that's one or two extra trains every hour. "We jolly well ought to be able to encompass that on a lot of lines," he suggests.

2022 April 6, Philip Haigh, “Passenger numbers increase... and freight must follow”, in RAIL, number 954, page 51