'arab (Hebrew #693)
to lurk
KJV usage: (lie in) ambush(-ment), lay (lie in) wait.
Pronounce: aw-rab'
Origin: a primitive root
riyb (Hebrew #7378)
a primitive root; properly, to toss, i.e. grapple; mostly figuratively, to wrangle, i.e. hold a controversy; (by implication) to defend
KJV usage: adversary, chide, complain, contend, debate, X ever, X lay wait, plead, rebuke, strive, X thoroughly.
Pronounce: reeb
Origin: or ruwb {roob}