Webster's Revised Unabridged Dictionary · 1913

Forsake

Forsake , transitive verb

[Anglo-Saxon forsacan to oppose, refuse; for- + sacan to contend, strive; akin to Gothic sakan. See For-, and Sake.]

1.
To quit or leave entirely; to desert; to abandon; to depart or withdraw from; to leave; as, false friends and flatterers forsake us in adversity.
If his children forsake my law, and walk not in my judgments. — Bible (KJV) - Psalm lxxxix. 30
2.
To renounce; to reject; to refuse.
If you forsake the offer of their love. — Shakespeare