Oxford Dictionary English set about phrasal verbphrasal verb Add to my wordlistjump to other resultsPhrasal Verbsset about somebody Add to my wordlistjump to other results(British English, old-fashioned, informal) to attack somebodyset about something | set about doing something Add to my wordlistjump to other results[no passive] to start doing something She set about the business of cleaning the house. We need to set about finding a solution. oxfordlearnersdictionaries.com