יָרִיבyârîyb

opponent, adversary (Isaiah 49:26; Psalms 35:1; Jeremiah 18:19)

Pronunciation: yaw-rebe' · Hebrew/Aramaic (Old Testament) · H3401

Same root

רִיבrîyb · H7378properly, to toss, i.e. grapple; mostly figuratively, to wrangle, i.e. hold a controversy; (by implication) to defend
יָרִיבYârîyb · H3402Jarib, the name of three Israelites
יְרִיבַיYᵉrîybay · H3403Jeribai, an Israelite

Where it appears

Appears 3 times in the Bible.

Psalms 35:1 O Lord, oppose those who oppose me. Fight those who fight against me.
Isaiah 49:25 But the Lord says, “The captives of warriors will be released, and the plunder of tyrants will be retrieved. For I will fight those who fight you, and I will save your children.
Jeremiah 18:19 Lord, hear me and help me! Listen to what my enemies are saying.

Source: Brown, Driver and Briggs, Hebrew and English Lexicon of the Old Testament (1906), public domain; markup by unfoldingWord, CC BY (github.com/unfoldingWord/Brown-Driver-Briggs-Enhanced).