The American Heritage® Dictionary of the English Language: Fourth Edition. 2000.
Appendix II
Semitic Roots
ENTRY:
yb.
DEFINITION:
To be(come) hostile to, hate; in nominal forms, enemy. Job, from Hebrew iyyôb, perhaps akin to Hebrew yb, enemy, participle of yab, to hate. (Alternatively, iyyôb may mean “where is the father?”; see b and yy.)
yb.
y
b, enemy, participle of 
yab, to hate. (Alternatively, 
