The term "ruth" originates from Old English and has largely fallen out of modern usage, replaced by more contemporary synonyms like "compassion" or "empathy." In Robert Southwell's poem "Loves Garden Grief," "ruth" is used to describe the root of despair and suffering, suggesting that deep compassion or pity can also lead to sorrow. This duality highlights the emotional complexity of human experience, where feelings of pity can coexist with pain and regret.

Historically, "ruth" was more commonly used in literature and poetry, particularly during the Middle Ages and the Renaissance. Its usage has declined significantly, making it a notable example of archaic language. Related terms include "compassion," "pity," and "mercy," though each carries slightly different connotations. When studying older texts, recognizing such terms can enhance understanding of the emotional depth and cultural context of the work. The etymology of "ruth" traces back to the Old English word "rūð," which conveys a sense of sorrow or compassion, underscoring its significance in expressing complex emotional states.