Definition of "expeditious"

Our coachman and horses are so extremely expeditious!—I believe we drive faster than anybody.

1815 December (indicated as 1816), [Jane Austen], chapter II, in Emma: […], volume III, London: […] [Charles Roworth and James Moyes] for John Murray, page 15

As they thus pressed forward, longing doubtless to exchange the easy curving line, which the sinuosities of the bay compelled them to adopt, for a straiter and more expeditious path, though less conformable to the line of beauty, Sir Arthur observed a human figure on the beach advancing to meet them.

1816, [Walter Scott], chapter VII, in The Antiquary. […], volume I, Edinburgh: […] James Ballantyne and Co. for Archibald Constable and Co.; London: Longman, Hurst, Rees, Orme, and Brown, page 153

Now, there was a sort of rough-and-ready law in Ireland in those days which was of great convenience to persons desirous of expeditious justice […].

1844 January–December, W[illiam] M[akepeace] Thackeray, “I return to Ireland, and exhibit my splendour and generosity in that kingdom”, in “The Memoirs of Barry Lyndon, Esq. [The Luck of Barry Lyndon.]”, in Miscellanies: Prose and Verse, volume III, London: Bradbury and Evans, […], published 1856, page 199