Middle Primitive Elvish
kab
root. to be able, capable
kab
root. hollow
kab-
verb. can, I can
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 root appearing as both √KAV and √KAB in verbal notes from the 1940s with glosses like “be able” and “capable” (PE22/105, 127). In this sense it was probably replaced by √POL in Tolkien’s later writing (PE17/181). It relationship to √KAB “hold, contain, retain” is unclear.