Middle Primitive Elvish
dag
root. dig
ndag
root. *slay
(n)dak
root. slay
day
root. shadow
dak
root. slay
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 rejected root in The Etymologies of the 1930s glossed “dig” (Ety/DAG), it may have been a transient replacement for √SAP.