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Adultery meaning

Published by a LexisNexis Family expert
What does Adultery mean?
Adultery describes a married person’s voluntary sexual intercourse with someone other than their spouse. The term is not defined in primary legislation; its meaning comes from case law, which has traditionally limited adultery to opposite‑sex intercourse. Practical significance varies by jurisdiction: - England and Wales: Since 6 April 2022 (divorce, Dissolution and Separation Act 2020), adultery is no longer a “fact” used to evidence irretrievable breakdown in divorce or dissolution. It may still feature as background or alleged “conduct” in family proceedings, but it rarely affects outcomes. - Scotland: Irretrievable breakdown of marriage may still be established by the defender’s adultery under the Divorce (Scotland) Act 1976, alongside behaviour or separation. - Northern Ireland: Adultery remains one of the facts by which irretrievable breakdown is proved under the Matrimonial Causes (Northern Ireland) Order 1978. - Ireland: Adultery is not a ground for divorce (Family Law (Divorce) Act 1996) but is a statutory ground for judicial separation (Judicial Separation and Family Law Reform Act 1989). Civil partnerships and same‑sex infidelity: adultery is generally inapplicable; dissolution or divorce proceeds on behaviour or separation. For same‑sex spouses, courts have treated “adultery” by reference to the traditional, opposite‑sex definition, with same‑sex infidelity addressed as behaviour rather than adultery.
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View the related Practice Notes about Adultery

PRACTICE NOTES
Judicial separation under the Matrimonial Causes Act 1973 (pre-DDSA 2020): five facts, financial limitations, decree effects and subsequent divorce petitions (England and Wales)

This Practice Note This note introduces judicial separation proceedings issued before 6 April 2022. It outlines the need to establish one of the five facts under section 1 of the Matrimonial Causes Act 1973—adultery, unreasonable behaviour, desertion, two years’ separation with consent, or five years’ separation. It also describes the legal consequences of a decree of judicial separation. The Divorce, Dissolution and Separation Act 2020 (DDSA 2020) took effect on 6 April 2022. Cases issued by the court on or after 6 April 2022 are governed by DDSA 2020 and by procedural amendments to the Family Procedure Rules 2010, SI 2010/2955. For more detail, see Practice Note: Introduction to the Divorce, Dissolution and Separation Act 2020. Applications issued by the court on or before 5 April 2022 continue under the pre‑DDSA 2020 regime. Those matters are unaffected by the commencement of DDSA 2020 or by related procedural reform. This document addresses the position for proceedings issued before 6 April 2022. Further legislative amendments have followed DDSA 2020, including to...

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PRACTICE NOTES
Bankruptcy and Divorce in England and Wales: Effects on Financial Remedies, Trustees’ Powers, Void Dispositions, Annulment and Forum Strategy

R&I spotlight on matrimonial law Bankruptcy specialists frequently face circumstances where bankruptcy and matrimonial proceedings unfold in tandem. In some cases, one spouse commences bankruptcy with the purpose of undermining the other spouse’s financial claims arising on divorce, or to defeat those claims. Principal legislation The Matrimonial Causes Act 1973 (MCA 1973) sets the framework governing the divorce regime in England and Wales. It was later amended and updated by the Divorce, Dissolution and Separation Act 2020 (DDSA 2020), introducing the concept of ‘no fault’ divorce for fresh applications formally lodged on or after 6 April 2022. For applications initiated before 6 April 2022, divorce could proceed only where one party alleged the marriage had irretrievably broken down, relying upon ‘facts’ such as the other’s adultery, unreasonable behaviour or abandonment, or where the parties had lived apart for two years and consented to divorce. Defended proceedings led to a public trial, requiring the applicant to prove the factual basis underpinning the divorce. Since 6 April 2022, under...

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PRACTICE NOTES
Adultery in Divorce Proceedings Issued Before 6 April 2022: Definition, Intolerability, Cohabitation, Co-respondents and Proof (England and Wales)

This Practice Note summarises the law in relation to adultery in divorce proceedings that were issued prior to 6 April 2022 . It outlines how adultery is defined within divorce cases in the context of divorce proceedings and the proof required to establish it, including reliance on confessions or admissions. It also addresses intolerability, the consequences of spouses remaining together after becoming aware of adultery, and the status of any co-respondent named. The Divorce, Dissolution and Separation Act 2020 (DDSA 2020) took effect on 6 April 2022. Proceedings issued by the court on or after 6 April 2022 are governed by DDSA 2020 and are subject to its provisions, as well as procedural changes under the amended Family Procedure Rules 2010 (FPR 2010), SI 2010/2955. For further information and context, see Practice Note: Introduction to the Divorce, Dissolution and Separation Act 2020. Proceedings issued by the court on or before 5 April 2022 continue to progress under the pre-DDSA 2020 law, whether submitted on the digital system...

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View the related Precedents about Adultery

PRECEDENTS
No-fault divorce under the DDSA 2020: client guide to procedure, timings, joint applications and costs (England and Wales)

This document offers general guidance on divorce procedure. Your family solicitor can provide advice tailored to your circumstances. Specific advice will depend on your circumstances, and your family solicitor can provide this. No fault divorce The Divorce, Dissolution and Separation Act 2020 (DDSA 2020) substantially reshaped divorce law, aiming to lower acrimony by bringing in the commonly called ‘no fault divorce’. The legislation removes the need to attribute fault when initiating proceedings, rather than apportion blame at the outset. It entirely dispenses with attributing blame at the commencement of divorce proceedings. Historically, to obtain a divorce in England and Wales, the applicant had to demonstrate that the marriage had irretrievably broken down, which required proving one of five facts. Three rested on fault—adultery, unreasonable behaviour, and desertion—while two depended on a qualifying period of separation: two years with consent, or five years without consent...

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PRECEDENTS
No-fault divorce (England and Wales) post-DDSA 2020: client guide to applications, joint/sole process, service, conditional/final orders, timescales, costs, and interaction with children and financial remedies

This note offers general guidance on divorce procedure only. Your family lawyer will be able to give specific advice tailored to your circumstances. No fault divorce The Divorce, Dissolution and Separation Act 2020 (DDSA 2020) has been widely described as a landmark reform of divorce law, intended to make the process less acrimonious by introducing what is commonly termed ‘no fault divorce’. For the first time, this legislation completely removes the need to attribute blame when commencing divorce proceedings, changing both tone and approach. The revised divorce procedure applies to applications issued from 6 April 2022. Historically, in England and Wales, anyone applying for a divorce had to demonstrate that the marriage had broken down irretrievably, and to do so they were required to prove one of five facts. Three of those facts depended on fault—adultery with a person of the opposite sex, unreasonable behaviour, and desertion—while the other two relied upon a period of separation, namely two years’ separation with consent or five years’ separation without consent...

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Q&As
Adultery petition with co‑respondent: no acknowledgement of service—can divorce proceed and consequences of no answer

To persuade the court to grant a decree nisi, proof that the application for a matrimonial order has been duly served is required. Ordinarily, this can be shown by producing the acknowledgement of service filed in the divorce proceedings. If the respondent does not return an acknowledgement of service or lodge any documentation, the petitioner must establish service. The petitioner may choose to arrange personal service of the petition on the respondent and any co-respondent. Where, after personal service, no acknowledgement of service is filed by the respondent, the person who effected service must file a certificate of service stating the precise date and time of that personal service. That certificate should be completed in Form FP6. If an application has been served on a respondent, no acknowledgement of service has been returned to the court office, and the court is satisfied that the said respondent has received the application, the court may direct that the application is deemed served (Family Procedure Rules 2010 (FPR 2010), SI 2010/2955, 6.16(1))...

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