(also righto or right-ho or rightho) Yes; correct; all right (1896+ British)
“right-o,” said Mr. Polly, emerging a little crumpled and breathless from this hearty introduction.
“You only need to have said ‘right-o,’ and I would have believed you,” said Batterby.
The Princess and I stood up and answered in the same tone, 'right-o, mon vieux,' and were aboard the lift in no time.
right-o, for you and Miss Lindsey, but what about nightingales' tongues for my author?
He can't any more 'n fire me, like he did the Southwestern right-o'-way man.
"right-o, if you think I'm 'the man for the job'," agreed Gipsy.
"right-o, my dear girl," declared Jess Morse with conviction.
right-o, lead on to your treasure cave and your fair women slaves.
"right-o, Elmer," exclaimed the other, making a dive for the tent to look up his medicine bag.
"right-o," said Mr. Cortwright, still with predetermined geniality.