Green’s Dictionary of Slang

lis-dil-lis adv.

[? legal SE lis, a lawsuit]

(UK Und.) face to face.

c.1850

Duncombe New and Improved Flash Dict. n.p.: Lis-dil-lis face to face; the Taggy capped it lis-dil-lis with him: the witness swore it face to face with him.