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.
Quenya
núta-
set, sink
panya-
fix, set
tulca-
fix, set up, establish
tulca- (2) ("k") vb. "fix, set up, establish" (LT1:270)
núta- vb. "set, sink" (of Sun or Moon) (NDŪ). In early "Qenya", the word was glossed "stoop, sink" (LT1:263)