What does detrimental mean?
"Detrimental" is a formal adjective meaning causing harm or damage. It is used to describe actions, conditions, substances, or circumstances that have an adverse effect on someone's health, interests, wellbeing, or success: smoking is detrimental to health, inflation can be detrimental to savings, and poor diet may be detrimental to a child's development. The word typically takes the preposition "to", naming whatever is harmed. Its register is formal to neutral, making it a staple of scientific papers, medical advice, legal argument, and quality journalism; in casual speech, speakers more often reach for "bad for" or "harmful". Unlike words carrying moral judgment, "detrimental" describes objective, measurable harm rather than wrongdoing. It derives from the noun "detriment", from the Latin "detrimentum", meaning loss or damage — originally the wearing-away caused by rubbing. Related forms include the adverb "detrimentally". Knowing this word lets writers name harm precisely and with authority, which explains its enduring popularity wherever careful, evidence-based claims are made about cause and consequence.
adjectiveCausing harm or damage; tending to have a harmful or damaging effect.
- Causing harm or damage; having an injurious or adverse effect on someone or something.
"Smoking is detrimental to your health."
"The new regulations could prove detrimental to small businesses."
"Lack of sleep has been shown to be highly detrimental to cognitive performance."
"Detrimental" comes from the Latin "detrimen" — literally the act of rubbing away, as friction wears down a surface — so anything detrimental is slowly grinding you down.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of detrimental
"Detrimental" derives from "detriment", which entered English from the Latin "detrimentum", meaning loss or damage, itself formed from "deterere", "to wear away" (de- "from" + terere "to rub"). The original image was of abrasion — the gradual wearing-down of a surface by friction — later extended metaphorically to any loss or injury. The adjective "detrimental" arose in English in the early 17th century and shares its root with cognate terms such as "detrusion"-family words built on Latin "terere", including "trite" and "attrition".
Related word forms
How detrimental is actually used
Formal to neutral in register, common in academic, medical, legal, and journalistic writing. It almost always appears with the preposition "to" when specifying what is harmed (detrimental to health). It carries no emotional charge — it describes objective harm rather than moral judgment.
Easily confused with detrimental
"Detriment" is a noun meaning the harm or damage itself, while "detrimental" is the adjective describing something that causes that harm.