Precisely means accurately and exactly. Nobody knows precisely how many people are still living in the camp The meeting began at precisely 4.00 p.m = exactly
emphasis You can use precisely to emphasize that a reason or fact is the only important one there is, or that it is obvious. Children come to zoos precisely to see captive animals
indicating exactness or preciseness; "he was doing precisely (or exactly) what she had told him to do"; "it was just as he said--the jewel was gone"; "it has just enough salt"
emphasis You can say `precisely' to confirm in an emphatic way that what someone has just said is true. `Did you find yourself wondering what went wrong?' --- 'Precisely.' = exactly