index crime
C1Technical / Formal
Definition
Meaning
A serious crime used by law enforcement agencies to track and measure crime trends.
A category of serious, typically felony-level, offences that are reported in national crime statistics (e.g., murder, rape, robbery, aggravated assault). The term originates from the FBI's Uniform Crime Reporting program, where these crimes form an 'index' for tracking.
Linguistics
Semantic Notes
Primarily used in criminology, law enforcement, and journalism. It refers to a collective category, not a single act. Often synonymous with 'Part I offenses' in the U.S. context.
Dialectal Variation
British vs American Usage
Differences
The term is much more established in American English due to its origin in the FBI's Uniform Crime Reports. In British English, 'recorded crime' or 'notifiable offences' are more common official terms, though 'index crime' is understood in professional contexts.
Connotations
In AmE, it carries a strong statistical/administrative connotation. In BrE, it may sound like an Americanism or a specific technical import.
Frequency
High frequency in American academic/legal texts; low-to-medium frequency in equivalent British texts, where it is a specialist term.
Vocabulary
Collocations
Grammar
Valency Patterns
The [police/FBI] reported a decrease in index crimes.[Murder/Robbery] is classified as an index crime.Statistics are based on seven major index crimes.Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Usage
Context Usage
Business
Rare, except in security consultancy reports (e.g., 'The neighbourhood's index crime rate affects commercial insurance premiums.').
Academic
Common in criminology, sociology, and criminal justice studies.
Everyday
Very rare; the average speaker would say 'serious crime' or 'violent crime'.
Technical
Standard term in law enforcement communications, crime analysis, and governmental statistical reports.
Examples
By Part of Speech
verb
British English
- The data is used to index crime trends over the decade.
American English
- The FBI indexes crimes to compile its annual report.
adjective
British English
- The index-crime figures were published in the Home Office report.
American English
- The index-crime data showed a worrying trend in property offences.
Examples
By CEFR Level
- The news said index crimes are going down in our city.
- Police forces focus their resources on combating serious index crimes like robbery and assault.
- While overall crime figures appeared stable, a nuanced analysis revealed a significant shift within the index crime categories, with violent personal crimes rising despite a drop in property-related index offences.
Learning
Memory Aids
Mnemonic
Think of an 'index' in a book: it helps you find important topics. 'Index crimes' are the important topics in crime statistics that help authorities track trends.
Conceptual Metaphor
CRIME IS A MEASURABLE QUANTITY (tracked by an index).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid translating as 'индекс преступления' – it's a calque. Use 'тяжкое преступление, учитываемое в официальной статистике' or 'особо опасное преступление'.
- Do not confuse with 'economic index' or 'price index' meanings of 'index'.
Common Mistakes
- Using it to refer to a minor crime.
- Using it as a countable noun for a single minor offence (e.g., 'He committed an index crime' sounds odd for shoplifting).
- Confusing 'index crime' with 'indictable offence' (a related but distinct legal term).
Practice
Quiz
In which context is the term 'index crime' MOST appropriately used?
FAQ
Frequently Asked Questions
No. While many index crimes are violent (e.g., murder, rape, aggravated assault), the category also includes serious property crimes like burglary and motor vehicle theft, which are non-violent.
It's not recommended, as it's a technical term. In everyday speech, 'serious crime' or specifying the crime (e.g., 'robbery') is more natural and widely understood.
A 'felony' is a broad legal classification of a serious crime with a specific punishment threshold. An 'index crime' is a specific set of felony-level crimes selected for statistical tracking. Almost all index crimes are felonies, but not all felonies are index crimes (e.g., tax evasion is a felony but not traditionally an index crime).
Not as a primary official term. The UK Home Office uses classifications like 'notifiable offences' for its crime statistics. However, 'index crime' is understood in academic and professional criminological circles, often influenced by American terminology.