What does attrition mean?
Attrition is the gradual reduction or weakening of something through sustained loss or pressure rather than sudden action. Most commonly, it describes how organizations shrink: when employees retire or resign and are not replaced, the workforce declines by 'natural attrition,' avoiding outright layoffs. In military and strategic contexts, a 'war of attrition' is a prolonged contest in which each side seeks to exhaust the other's manpower, resources, or morale faster than its own are depleted. The word also has a literal sense, referring to the physical wearing away of material by friction or abrasion. Attrition carries a somewhat clinical, formal tone and often implies patience, persistence, or grim inevitability — losses accrue slowly but steadily. It is a useful word precisely because it captures decline that is incremental rather than dramatic, making it essential vocabulary in discussions of business strategy, warfare, geology, and statistics alike.
The gradual reduction in numbers, strength, or size of something through sustained loss, pressure, or natural wastage.
"The university reduced its faculty through attrition rather than forced redundancies."
Often qualified as 'natural attrition' when losses occur without deliberate dismissal.
A protracted conflict or effort designed to gradually exhaust an opponent's resources or will to resist.
"Rather than risk open battle, he chose a war of attrition, waiting for his rival's funds to run dry."
The wearing away of a substance by continuous friction or rubbing.
"Centuries of wind-driven sand caused steady attrition of the carved inscription."
This literal sense is less common today, surviving mainly in technical and geological contexts.
Rarely used in the plural; attrition is almost always treated as an uncountable mass noun referring to a general process. The plural appears only occasionally in technical contexts referring to multiple distinct instances.
"The report examined attritions across several divisions of the firm."
In HR jargon, attrition is the polite way of shrinking a company without firing anyone — you just stop refilling the seats as people leave.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of attrition
Attrition derives from the Latin verb 'atterere,' meaning 'to wear away or rub against,' formed from 'ad-' ('to, toward') plus 'terere' ('to rub'), the same root that gives us 'trite' and 'contrition.' It entered English via Late Latin and French in the early modern period, first carrying the literal sense of rubbing or wearing down. Its figurative senses — gradual depletion of forces or numbers — developed later, with the military phrase 'war of attrition' becoming prominent during the First World War.
How attrition is actually used
Formal to neutral register, common in business, military, and academic writing. In business contexts it usually refers neutrally to unfilled vacancies; in military contexts ('war of attrition') it carries connotations of grim, costly endurance.
Easily confused with attrition
Attrition means gradual wearing away or reduction in number; contrition means sincere remorse for wrongdoing — they share a Latin root but have unrelated meanings.