They may occur infrequently or many times each minute. Now that hats are infrequently worn, turbans too are relatively uncommon. They are often used in a place of a switch motor on infrequently used switches. Although Bert was often drunk and infrequently home, Caresse did not lack for company. Additionally, there are some other awards that have been given once or very infrequently. Rare or extreme events are discrete occurrences of infrequently observed events. Overgrazing exacerbates the erosion caused by the violent thunderstorms that occur, infrequently, in the summer. They start seeing each other quite infrequently. It becomes rare in the north, occurring only infrequently in southern Scotland. Antivirus software came into use, but was updated relatively infrequently. Blair had previously been used infrequently and mostly as a masculine name. Everyone uses numbers for identification although names are infrequently used. It can be underwater anywhere from daily to very infrequently. Accelerons are thought to interact with matter more infrequently than they do with neutrinos. Today in Europe they are very infrequently used.