undar-

Etymology 1
From, from.

Prefix

 * 1) between, among
 * undarniman "to interrupt"
 * undartwisk "between"
 * undargangan "to intervene"

Etymology 2
From, from.

Prefix

 * 1) beneath, under, what is hidden behind
 * undarhuggian "to understand"
 * undarsōkian "to examine"
 * undarfaran "to go under, steal in"
 * undarfindan "to find out"
 * 1) subordinate to
 * undarwerpan "to subdue"