Focus on the pronunciation of flag
› [T] to put a mark on something or against something so it can be found easily among other similar things: Flag any files which might be useful later. › [T] IT to mark computer information with one of two possible values so that you can process it later: We'll flag the records of interest in the database and then we can give you a printout. › [I] to become tired, weaker, or less effective: We had been working on the presentation for six hours and I was beginning to flag. They denied that demand for the new product was flagging.