elope

Etymology

From Anglo-Norman aloper (“to abduct, run away”), itself borrowed from Proto-West Germanic *andihlaupan (“to run away”). Equivalent to and- + lope as well as and- + leap (these being doublets). More at lope.

verb

1. (intransitive, of a married person) To run away from home with a paramour.
2. (intransitive, of an unmarried person) To run away secretly for the purpose of getting married with one's intended spouse; to marry in a quick or private fashion, especially without a public period of engagement.
   My younger sister has left all her friends-- has eloped; has thrown herself into the power of-- of Mr. Wickham. 1813, Jane Austen, Pride and Prejudice
   Although Cecilia was the youngest of the surviving Thrale daughters, she had been the first to marry, eloping to Gretna Green in 1795 with John Meredith Mostyn of neighboring Llewesog Lodge. Both were underage. 1996, “Introduction”, in Edward A. Bloom, Lillian D. Bloom, editors, The Piozzi Letters: Correspondence of Hester Lynch Piozzi, 1784-1821 (formerly Mrs. Thrale), Volume 4, 1805-1810, Associated University Presses, page 30
   Although they had eloped in Vegas, she'd insisted he wear a tuxedo and she buy a wedding dress at one of the local stores. 2009, Jan Springer, Intimate Stranger, Ellora's Cave, published 2009, page 132
   They knew each other for maybe a month before they eloped in Vegas. 2012, Shirley Jump, One Day to Find a Husband, Harlequin, published 2012, page 136
3. (intransitive, dated) To run away from home (for any reason).
   He had been intended by his father for trade, but his spirit, soaring above the occupation for which he was designed, from repining led him to resist, and from resisting, to rebel. He eloped from his friends, and contrived to enter the army. 1782, Frances Burney, Cecilia
   If we'd been a bit quicker, we could have caught Gowan before he eloped 1931, Dorothy L. Sayers, The Five Red Herrings