Strong's #7256: roba` (pronounced ro'-bah)
from 7251; a descendant of the fourth generation, i.e. great great grandchild:--fourth.
Brown-Driver-Briggs Hebrew Lexicon:
ּ
ribbêa‛
1) pertaining to the fourth
Part of Speech: adjective
Relation: from H7251
Usage:
This word is used 4 times:
Exodus 20:5: "the children unto the third and fourth generation of them that hate"
Exodus 34:7: "the children's children, unto the third and to the fourth"
Numbers 14:18: "the iniquity of the fathers upon the children unto the third and fourth"
Deuteronomy 5:9: "the children unto the third and fourth generation of them that hate"