Definition of "languorous"

The atmosphere beneath is languorous, and is so tinged with azure that what artists call the middle distance partakes also of that hue, while the horizon beyond is of the deepest ultramarine.

1891, Thomas Hardy, Tess of the d'Urbervilles, volume 1, London: James R. Osgood, McIlvaine and Co., page 12

Warm as a Lesbian valley's afternoon Made langourous [sic] with June

1911, George Sterling, The House of Orchids‎

After a languorous stretch of exposition that introduces a lot of pseudoscientific mumbo-jumbo and enough supporting characters to fill a Dickens novel (played by the likes of Rainn Wilson, Cliff Curtis, and Ruby Rose), we follow a three-person submersible down to the ocean depths.

8 August 2018, Ignatiy Vishnevetsky in AV Club, Jason Statham fighting a giant shark should be a lot more fun than The Meg