Definition and pronunciation
fornication — noun: sexual intercourse outside marriage; most often used in religious, moral, or legal language.
Pronunciation: /ˌfɔːrnɪˈkeɪʃən/ (US/UK).
Easy explanation
Fornication is a formal, old-sounding word for having sex when two people are not married to each other. Today it appears mostly in religious writing, history, or laws; everyday English prefers clear, neutral phrases like have sex.
Part of speech and grammar
- Noun, usually uncountable: fornication; rarely plural in older texts.
- Family: fornicate (verb), fornicating (gerund/participle), fornicator (person), fornicatory (adjective).
- Common frames: commit fornication; charged with fornication (historical/legal); acts of fornication (formal).
Register and tone
Formal, judgment-tinged. It can sound moralizing or archaic. In education, health, and journalism, writers usually choose neutral terms (have sex, sexual intercourse, premarital sex if that distinction matters).
Connection to sexuality
Direct. The word names sexual activity, traditionally framed as “outside marriage.” It does not specify type of act; context or modifiers are needed for medical/legal clarity.
Common collocations
commit fornication, acts of fornication, fornication and adultery, fornication laws/statutes (historical), charge of fornication, guilty of fornication, sexual immorality and fornication (translation pairing), premarital fornication (doctrinal phrase)
Idioms and set phrases
- commit fornication — formal set phrase meaning “have sex outside marriage.”
- temptations of fornication — religious rhetoric.
- fornication and adultery — stock pair in moral/legal codes (premarital vs extramarital).
Prepositions and meaning shifts
- fornication with [someone] — names a partner; very formal/archaic.
- fornication before/outside marriage — states the moral frame explicitly.
- fornication under/against [statute/doctrine] — ties the act to a specific rule or law.
- Note: some jurisdictions once used “fornication” for various offenses; modern criminal codes usually use precise terms (e.g., sexual assault, statutory rape). Consent and legal capacity matter.
Word comparisons
- fornication vs adultery — adultery involves at least one married person breaking marital vows; fornication historically means premarital sex.
- fornication vs have sex/sexual intercourse — the latter are neutral/clinical and preferred for clarity.
- fornication vs promiscuity — promiscuity is frequency/variety of partners (often judgmental), not a single act.
- fornication vs copulation — copulation is biological/technical and value-neutral.
Real-life examples
- The statute banning fornication was repealed; newer laws focus on consent and capacity.
- A sermon condemned fornication and adultery, using traditional wording.
- Editors replaced “fornication” with “premarital sex” to be specific and less judgmental.
- A historian traced how courts once prosecuted fornication differently from adultery.
Sample sentences
- The pamphlet warns against fornication, using strictly religious language.
- Modern health guides avoid the term and describe behaviors (number of partners, barrier use).
- The film uses “fornicate” for period flavor, but the dialogue elsewhere says “have sex.”
- Laws now emphasize consent; “fornication” as a crime is rare or obsolete in many places.
Synonyms
premarital sex, sex outside marriage, have sex, sexual intercourse, copulation, illicit sex, immoral relations
Antonyms
abstinence, chastity, celibacy, marital sex, monogamy, fidelity
Related terms
fornicate, fornicator, fornicatory, adultery, premarital sex, extramarital sex, sexual ethics, morality, consent, capacity, age of consent, statutory rape, sexual assault, chastity, celibacy
Notes and etiquette
Use neutral, behavior-based language when clarity or respect is important. If you quote religious or historical sources, keep the term but explain what it meant in that context. Avoid implying consent where the law denies capacity (minors, intoxication, coercion).
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