A verb in The Etymologies of the 1930s glossed “to rend” derived from the root ᴹ√NARAK “tear, rend (tr. and intr.)” (Ety/NÁRAK; EtyAC/NÁRAK). In The Etymologies as published in The Lost Road Christopher Tolkien gave the form as narki (LR/375), but Carl Hostetter and Patrick Wynne corrected this to narka in their Addenda and Corrigenda to the Etymologies (VT45/37).
Qenya
númeheruvi arda sakkante lenéme ilúvatáren
the Lords of the West broke the world by leave of Ilúvatar
narka-
verb. to rend
|1| 2 |3|4|5| |manwe|herunūmen|{herunūmen >>} Nūmekundo|númeheruvi| |ilu|{ilu >> eru >>}|arda| |terhante|{terhante >>} askante|sakkante| | |...|{... >>}|lenéme| | |Ilúvatáren|