Qenya
lehta-
verb. to loose, slacken
lenka-
verb. to loose, slacken
Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!
A verb appearing as ᴹQ. lehta “loose, slacken” in The Etymologies of the 1930s under the root ᴹ√LEK “loose, let loose, release” (Ety/LEK). It had a variant form, given as leuka in The Etymologies as published in The Lost Road (LR/368), but in their Addenda and Corrigenda to the Etymologies Carl Hostetter and Patrick Wynne stated the actual form was lenka (VT45/27).