Divorce terminology is the specialized vocabulary courts, attorneys, and clerks use for each person, document, and decision in a case that ends a marriage, and understanding it lets you read your own paperwork instead of guessing at it. The terms below are the ones you are most likely to encounter, grouped by the stage of the case where they show up.
Who’s Who and What Gets Filed
The spouse who starts the case is the petitioner, sometimes called the plaintiff. That person files a petition (or complaint) with the local clerk of court, which officially opens the case.1Legal Information Institute. Petitioner The petition states what the filing spouse is asking for: the divorce itself plus requests about property, support, and children. The other spouse is the respondent (or defendant).
After filing, the petitioner has to formally notify the respondent that a case exists. That notification is service of process, and you cannot do it yourself. A sheriff, professional process server, or another adult who is not a party to the case must deliver the papers.2Judicial Branch of California. Serve Your Divorce Papers Along with the petition, the respondent receives a summons, a court order telling them how long they have to file a written response. That deadline varies by jurisdiction but commonly falls between 20 and 30 days.
If the respondent ignores the summons and never files a response, the court can enter a default judgment. That typically means the judge grants whatever the petitioner originally requested, because the respondent is treated as having no objections.
A spouse who handles the case without an attorney is called a pro se litigant, from the Latin for “in one’s own behalf.”3United States District Court District of Massachusetts. Frequently Asked Questions About Pro Se Litigation Courts allow self-representation, but pro se litigants are held to the same procedural rules as attorneys.
Types of Marriage-Ending Cases
A dissolution of marriage is the standard legal process for ending a valid marriage. The term is functionally interchangeable with “divorce” in most courts. An annulment is different: it is a judicial declaration that the marriage was never legally valid in the first place. Grounds are narrow and can include fraud, bigamy, or one party lacking the mental capacity to consent at the ceremony.
A legal separation lets spouses live apart, divide assets, and establish support obligations while remaining technically married. Some couples choose it for religious reasons, to preserve insurance coverage, or to buy time before making the split permanent.
Most divorces today proceed on no-fault grounds, meaning neither spouse has to prove the other did something wrong. The filing typically cites “irreconcilable differences” or an “irretrievable breakdown” of the relationship. At-fault grounds still exist in some states and require proof of specific conduct like adultery, cruelty, or abandonment. An at-fault case usually takes longer and costs more because you have to produce evidence, but it can sometimes influence how a court divides property or awards support.
Discovery: How Information Gets Gathered
Before anything gets divided, both sides need a complete picture of what exists. The discovery phase is how that picture gets built, and courts expect full financial transparency.
Interrogatories are written questions one spouse sends to the other; the answers must be provided under oath. They usually cover income, debts, assets, and spending. Requests for production demand specific documents like bank statements, tax returns, or business records. Requests for admission ask the other side to confirm or deny particular facts, which narrows what actually has to be argued at trial.
A deposition is live, in-person questioning conducted under oath and recorded by a court reporter. Attorneys use depositions to lock down testimony before trial and to see how a witness will come across in front of a judge. If one spouse suspects the other is hiding assets, a subpoena duces tecum can compel banks, employers, or other third parties to hand over records directly to the court.
Property, Debt, and Valuation Terms
Marital property, also called community property in some states, generally includes anything acquired during the marriage, regardless of whose name is on the title. Separate property includes assets owned before the marriage, inheritances received by one spouse, and gifts given specifically to one spouse. The line between the two blurs more often than people expect. A house you owned before marriage can become partly marital property if both spouses contributed to the mortgage or renovations.
How marital property gets divided depends on where you live. Nine states follow a community property system, which starts from the premise that both spouses equally own everything earned during the marriage. Not every community property state mandates a strict 50/50 split. The remaining states use equitable distribution, where a judge divides assets in a way that is fair but not necessarily equal. Factors typically include the length of the marriage, each spouse’s income and earning potential, contributions to the household, and the health and age of both parties.
When the estate includes a business or a complex investment, courts often bring in a forensic accountant to trace funds, identify hidden income, and value the business by adjusting its statements to reflect real economic performance. The date on which assets are measured, the valuation date, varies by jurisdiction and can shift the outcome significantly.
Debt allocation has its own vocabulary. A divorce decree can assign a joint credit card or loan to one spouse, but that assignment is not binding on the creditor. If your ex was ordered to pay and stops, the lender can still come after you. That is why agreements often include a hold harmless (or indemnification) clause, a promise between the spouses that if one gets stuck paying a debt the other was supposed to handle, the paying spouse can sue to recover the money. It does not stop the creditor from collecting; it just gives you a path to reimbursement.
Splitting a 401(k), pension, or other employer-sponsored plan requires a Qualified Domestic Relations Order (QDRO), a court order directing the plan administrator to pay a portion of one spouse’s benefits to the other spouse, who is called the alternate payee.4U.S. Department of Labor. QDROs The Division of Retirement Benefits Through Qualified Domestic Relations Orders Federal law carves out a specific exception from the 10% early withdrawal penalty for distributions made to an alternate payee under a QDRO.5Office of the Law Revision Counsel. 26 USC 72 – Annuities; Certain Proceeds of Endowment and Life Insurance Contracts Without a properly drafted QDRO, the plan has no legal authority to release funds to anyone other than the account holder.6Office of the Law Revision Counsel. 29 USC 1056 – Form and Payment of Benefits Federal law also prohibits plans from charging participants or alternate payees a fee to determine whether an order qualifies.
Support Terms
Spousal support goes by several names: alimony, maintenance, or simply spousal support. The purpose is to help the lower-earning spouse maintain a reasonable standard of living after the marriage ends, especially when one spouse sacrificed career advancement to raise children or support the other’s career.
Pendente lite support, from the Latin for “while the case is pending,” covers the period between filing and the final decree. These temporary payments always end when the divorce is finalized. Long-term support orders survive the decree and last for a set period or until a triggering event like remarriage. Rehabilitative support is designed to fund education or job training so the receiving spouse can become self-sufficient, and courts typically tie its duration to the expected completion of a degree or retraining program. When setting an amount, courts look at the marital standard of living, meaning the lifestyle the couple maintained during the marriage as measured by income, housing, spending, and savings.
Child support is calculated using state-specific guidelines that factor in parental income, the number of children, health insurance costs, and childcare expenses. If either parent has employer-sponsored health insurance, the court may issue a Qualified Medical Child Support Order (QMCSO), which requires the plan to enroll the child as a covered beneficiary.7Legal Information Institute. Qualified Medical Child Support Order (QMCSO)
Custody Vocabulary
Legal custody is the right to make major decisions about a child’s education, healthcare, and religious upbringing. Physical custody determines where the child lives day to day. The two are separate and do not always go to the same parent. Joint custody means both parents share decision-making, physical time, or both. Sole custody grants those rights to one parent. Even when legal custody is shared, one parent is usually designated the primary residential parent for school enrollment and similar purposes.
A parenting plan spells out the practical details: weekly schedules, holiday rotations, vacation time, pickup and drop-off logistics, and rules for communication between households.
When parents live in different states, the Uniform Child Custody Jurisdiction and Enforcement Act (UCCJEA) determines which state’s court has authority over custody decisions. The Act is designed to prevent competing custody cases in different states and to deter interstate parental kidnapping.8Office of Justice Programs. The Uniform Child-Custody Jurisdiction and Enforcement Act Under the UCCJEA, the child’s home state, typically where the child has lived for the past six consecutive months, has priority.
Tax Terms That Come Up in Divorce
A handful of tax concepts appear so often in divorce paperwork that they function as terminology in their own right.
Filing status. Your federal tax filing status for the year depends on whether you are married or divorced on December 31. If your decree is finalized by that date, the IRS considers you unmarried for the entire year.9Internal Revenue Service. Filing Status
Incident to divorce. Transfers of property between spouses as part of a divorce are generally tax-free. Under federal law, no gain or loss is recognized on a transfer to a spouse or former spouse when the transfer is “incident to the divorce,” meaning it occurs within one year after the marriage ends or is related to the ending of the marriage.10Office of the Law Revision Counsel. 26 USC 1041 – Transfers of Property Between Spouses or Incident to Divorce The recipient takes the transferor’s original tax basis, so any built-in gain or loss travels with the asset.
Post-2018 alimony treatment. For any divorce agreement finalized after December 31, 2018, alimony payments are not deductible for the payer and not taxable income for the recipient. The Tax Cuts and Jobs Act made that change permanent.11Office of the Law Revision Counsel. 26 USC 215 – Repealed Older agreements executed on or before that date still follow the prior rules unless the agreement was later modified to adopt the new treatment.
Settlement and Final Order Terms
Many cases resolve through mediation, where a neutral third party helps both spouses negotiate an agreement outside of court. If mediation succeeds, the result is a settlement agreement (sometimes called a marital settlement agreement or separation agreement), a binding contract covering property division, support, custody, and everything else the couple has negotiated.
The settlement agreement gets submitted to a judge for review. Once approved, the judge signs the divorce decree (or final judgment), which officially terminates the marriage. Most states impose a mandatory waiting period between filing and the final decree, ranging from as few as 20 days to more than six months, depending on the state and whether minor children are involved.
The decree is entered into official court records by the clerk, and you will want a certified copy for practical matters like changing your name on government documents, updating bank accounts, or remarrying. If the decree contains a clerical error, a court can issue a corrected order called a nunc pro tunc order, from the Latin for “now for then,” which makes the correction effective as of the original date. Nunc pro tunc orders are limited to genuine clerical mistakes and cannot be used to change the substance of what was agreed to.
Terms for Changing an Order Later
A final decree is not always the last word. Custody arrangements, child support, and sometimes spousal support can be modified after the fact, but you generally have to show a material and substantial change in circumstances since the original order was entered. Examples include a significant change in either parent’s income, a child’s evolving needs, a parent’s relocation, or changes in health insurance coverage. Property division, by contrast, is almost never reopened once the decree is final.
Filing a modification requires going back to court with a formal motion, and the burden is on the person requesting the change to explain why the current order no longer works. Modifications typically take effect from the date the motion is filed, not retroactively to the date the underlying change occurred, so filing promptly matters when circumstances shift.