► oftenif something happens often, or you do something often, it happens regularly or many times:  She often works on weekends. If you wash your hair too often, it can get very dry.
► a lot informal if you do something a lot, you do it often:  He runs a lot because he’s on the track team.
► frequently very often. Used especially in writing or more formal speech:  Caroline frequently visited her family in New York.
► regularly happening at the same times, for example every day, every week, or every month:  You should exercise regularly to stay healthy.
► repeatedly used to emphasize that someone does something many times:  I asked him repeatedly to tell me what was wrong.
► constantly/continually very often over a long period of time:  They seemed to be constantly arguing. She continually asked the same questions.
► continuously happening without stopping:  The noise went on continuously from morning to night.
► again and again/over and over (again) used to emphasize that the same thing has happened many times, and more often than you would expect:  She kept asking the same question again and again.