What does deterred mean?
'Deterred' is the past tense and past participle of the verb 'to deter', meaning to have discouraged someone from doing something by arousing fear, doubt, or an expectation of unpleasant consequences. It typically appears in contexts involving prevention: security cameras may have deterred burglars, steep fees may have deterred applicants, and harsh penalties are said to deter crime. The word is standard in both British and American English and is especially common in formal writing about law, economics, and public policy. Its most familiar derivative is the adjective 'undeterred', which describes someone who persists in spite of discouragement, giving the word family a notable range from negative prevention to positive perseverance. Related forms include 'deterrent' (a noun or adjective for something that deters) and 'deterrence', a key term in military strategy. The word ultimately traces back to the Latin 'deterrēre', formed from 'de-' (away) and 'terrēre' (to frighten) — the same root behind 'terror'.
verbPast tense and past participle of 'deter': to have discouraged someone from doing something by instilling doubt, fear, or a sense of the likely negative consequences.
- To have discouraged someone from taking an action by making them fear its consequences or doubt its value; used especially of measures, threats, costs, or obstacles that prevent behavior.
"High interest rates deterred many first-time buyers from entering the housing market."
"The heavy fine deterred drivers from parking in the bus lane."
"Despite repeated setbacks, the researchers remained undeterred in their pursuit of a vaccine."
The same ancient root that gives us 'terror' and 'terrific' hides inside 'deterred' — literally, to frighten someone away.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of deterred
'Deterred' comes from the Latin 'deterrēre', meaning 'to frighten from or away', formed from the prefix 'de-' (away from) and 'terrēre' (to frighten). The verb entered English in the late 16th or early 17th century via French or directly from Latin. It shares this frightening root with words such as 'terror', 'terrify', and 'terrorize', all descended from the Latin 'terrēre'.
Related word forms
How deterred is actually used
Register is neutral to formal; the verb is common in journalism, legal writing, and policy discussion. It frequently appears with 'from' plus a gerund ('deterred from leaving') and in the adjective form 'undeterred', which carries a positive connotation of persistence despite obstacles.
Easily confused with deterred
'Deferred' means postponed or put off to a later time, while 'deterred' means discouraged or prevented from acting through fear or doubt.