leu- / Indo-European roots
Examples of words with the root leu-: -less, -lyte, -lytic, absolute, analysis, assoil, catalysis, consolute, dialysis, dissolve, forlorn, forlorn hope, lag, leasing, leister, loess, loose, lorn, lose, lues, lyase, lyo-, lysis, lyso-, paralysis, resolve, soluble, solute, solve, tachylyte.
To loosen, divide, cut apart.
▲ Derivatives include forlorn, analysis, solve.
I. Extended Germanic root *leus-.
1. a. lorn, losel from Old English -lēosan, to lose; b. (i) forlorn from Old English forlēosan, to forfeit, lose; (ii) forlorn hope from Dutch verliezen (past participle verloren), to lose. Both
(i) and (ii) from Germanic *fer-leusan, *far-leusan (*fer-, *far-, prefix denoting rejection or exclusion; see per1). Both a and b from Germanic *leusan, with Old English and Dutch past participle loren from Germanic *luzana-, from Indo-European suffixed zero-grade form *lus-ono-..
2. a. leasing, -less from Old English lēas, "loose" free from, without, untrue, lacking; b. lose, loss from Old English los, loss; c. loose from Old Norse lauss, louss, loose; d. loess from German dialectal lösch, loose. a-d all from Germanic *lausaz.
3. leister from Old Norse ljōsta, to strike, perhaps from Germanic *leustan.
II. Basic form *leu-.
1. lag2 probably from a source akin to Swedish lagg, barrel stave (< "split piece of wood"), from Germanic *lawwō.
2. Zero-grade form *lu-. a. lyo-, lysis, lyso-, -lyte, lytic, -lytic; analysis, catalysis, dialysis, lyase, palsy, paralysis, tachylyte from Greek lūein, to loosen, release, untie; b. lues from Latin luēs, plague, pestilence (< "dissolution, putrefaction"); c. prefixed form *se-lu- (se-, apart; see s(w)e-) soluble, solute, solve; absolute, absolve, assoil, consolute, dissolve, resolute, resolve from Latin solvere, to loosen, untie.
[Pokorny 2. leu- 681.]