Quenya 

napan-

add

napan- vb. "add" (PE17:146)

napan-

verb. to add

Element in

  • ᴹQ. napanna “additional letter”

panya-

fix, set

panya- vb. "fix, set" (PAN). The verb napan- (q.v.), "add" or literally *"to-set", may argue the existence of a shorter stem #pan- as well.

yantya-

add, augment

yantya- vb. "add, augment" (PE15:68)

tulca-

fix, set up, establish

tulca- (2) ("k") vb. "fix, set up, establish" (LT1:270)