Etymology From Middle English waymenten, from Anglo-Norman waimenter (“to lament”) (compare Old French guaimenter, gaimenter (“to lament”)), a conflation of wai, guai (“woe”), from Frankish *wai, *wē (“woe”) from Proto-Germanic *wai (“woe”), and Latin lamentari (“to lament”). Akin to Old High German wē (“woe”) (German Weh "woe, pain"), Old English wā (“woe”). More at woe, lament.
For what bootes it to weepe and to wayment, / When ill is chaunst, but doth the ill increase […]?1590, Edmund Spenser, “Book II, Canto I”, in The Faerie Queene. […], London: […] [John Wolfe] for William Ponsonbie, →OCLC:
wayment
noun
Etymology From Middle English waymenten, from Anglo-Norman waimenter (“to lament”) (compare Old French guaimenter, gaimenter (“to lament”)), a conflation of wai, guai (“woe”), from Frankish *wai, *wē (“woe”) from Proto-Germanic *wai (“woe”), and Latin lamentari (“to lament”). Akin to Old High German wē (“woe”) (German Weh "woe, pain"), Old English wā (“woe”). More at woe, lament.
And they, for pittie of the sad wayment1591, Ed[mund] Sp[enser], “The Ruines of Time”, in Complaints. Containing Sundrie Small Poemes of the Worlds Vanitie. […], London: […] William Ponsonbie, […], →OCLC:
wayment
intj
Etymology Contraction, especially reflective of a common African American Vernacular English pronunciation. Spelling very unlikely to have been influenced by Etymology 1.
“Wayment. Hold up.” Christophe stopped drawing. “What the hell, Nicco? That's not a book.” “And 'wayment' is a word?” questioned Ramsey, chuckling at Christophe's pronunciation of “wait a minute.”2018, Genevive Chamblee, Out of the Penalty Box:
2019 Jade Boren, Halle Berry & Lena Waithe Share A Passionate Kiss On ‘Jimmy Kimmel Live!’ Hollywood Life, 23 May 2019. Accessed 29 May 2019. “Wayment! she know you gotta girl??? I’m ready to fight!!!!!! Halle who!???” Ericka commented, referring to film production executive Alana Mayo, who became engaged to Lena during Thanksgiving in 2017.