The correct spelling of the phrase "gat to bottom" is actually "get to bottom." This phrase means to fully understand or thoroughly investigate a situation. The pronunciation of "get" is /ɡɛt/, with a hard "g" sound as in "give." The word "to" is pronounced as /tu/ and the word "bottom" is pronounced /ˈbɒtəm/, with a short "o" sound as in "lot." So, the whole phrase is pronounced as /ɡɛt tu ˈbɒtəm/. Remembering the correct spelling and pronunciation of common phrases is important in effective communication.