A more thorough explanation:

The grounds for divorce refer to the legally acceptable reasons for ending a marriage. In the United States, most states have adopted a no-fault divorce system, which means that a person can file for divorce without having to prove that their spouse did something wrong. However, some states still require a person to provide a reason for the divorce.

Traditional fault grounds for divorce include adultery, cruelty, abandonment, and imprisonment. These reasons are no longer required in most states, but they may still be considered in certain situations, such as when determining child custody and visitation.

Common no-fault grounds for divorce include:

• Irreconcilable differences that have caused the marriage to break down irretrievably
• Failed attempts at reconciliation
• Impracticability of further attempts at reconciliation
• Living separately and apart for a certain period of time (usually six months to a year)

For example, if a couple has been living apart for six months and has tried to reconcile but failed, they may be able to file for divorce on the grounds of irreconcilable differences. This means that they have come to the conclusion that their marriage cannot be saved and that it is in their best interests to end it.

Overall, the grounds for divorce are the reasons that a court will accept as valid for ending a marriage. While fault grounds are no longer required in most states, they may still be considered in certain situations.