Kennan Family Law Lawyer, Wisconsin

A conflict in personalities that makes married life together impossible. In a number of states, incompatibility is the accepted reason for a no-fault divorce. Compare irreconcilable differences; irremediable breakdown.

A special kind of property ownership that's only for married couples. Both spouses have the right to enjoy the entire property, and when one spouse dies, the surviving spouse gets title to the property (called a right of survivorship). It is similar to joint tenancy, but it is available in only about half the states.

The inability of a spouse to engage in sexual intercourse with the other spouse. In some states, physical incapacity is a ground for an annulment or fault divorce, assuming the incapacity was not disclosed to the other spouse before the marriage.

The entitlement of all children to be supported by their parents until the children reach the age of majority or become emancipated -- usually by marriage, by entry into the armed forces or by living independently. Many states also impose child support obligations on parents for a year or two beyond this point if the child is a full-time student. If the parents are living separately, they each must still support the children. Typically, the parent who has custody meets his or her support obligation through taking care of the child every day, while the other parent must make payments to the custodial parent on behalf of the child -- usually cash but sometimes other kinds of contributions. When parents divorce, the court almost always orders the non-custodial parent to pay the custodial parent an amount of child support fixed by state law. Sometimes, however, if the parents share physical custody more or less equally, the court will order the higher-income parent to make payments to the lower-income parent.

Latin for 'friend of the court.' This term describes a person or organization that is not a party to a lawsuit as plaintiff or defendant but that has a strong interest in the case and wants to get its two cents in. For example, the ACLU often submits materials to support a person who claims a violation of civil rights even though that person is represented by a lawyer.

The payment made to a lawyer for legal services. These fees may take several forms: hourly per job or service -- for example, $350 to draft a will contingency (the lawyer collects a percentage of any money she wins for her client and nothing if there is no recovery), or retainer (usually a down payment as part of an hourly or per job fee agreement). Attorney fees must usually be paid by the client who hires a lawyer, though occasionally a law or contract will require the losing party of a lawsuit to pay the winner's court costs and attorney fees. For example, a contract might contain a provision that says the loser of any lawsuit between the parties to the contract will pay the winner's attorney fees. Many laws designed to protect consumers also provide for attorney fees -- for example, most state laws that require landlords to provide habitable housing also specify that a tenant who sues and wins using that law may collect attorney fees. And in family law cases -- divorce, custody and child support -- judges often have the power to order the more affluent spouse to pay the other spouse's attorney fees, even where there is no clear victor.

A federal law that requires employers to provide an employee with 12 weeks of unpaid leave during a year's time for the birth or adoption of a child, family health needs or personal illness. The employer must allow the employee to return to the same position or a position similar to that held before taking the leave. There are exceptions to the FMLA: the most notable is that only employers with 50 or more employees are covered--about half the workforce.

Papers filed with a court clerk by the plaintiff to initiate a lawsuit by setting out facts and legal claims (usually called causes of action). In some states and in some types of legal actions, such as divorce, complaints are called petitions and the person filing is called the petitioner. To complete the initial stage of a lawsuit, the plaintiff's complaint must be served on the defendant, who then has the opportunity to respond by filing an answer. In practice, few lawyers prepare complaints from scratch. Instead they use -- and sometimes modify -- pre-drafted complaints widely available in form books.