babysit babysit /ˈbeɪbiːsɪt/

verb

1. Work or act as a baby-sitter  ( baby-sit , babysit , sit )
   work or act as a baby-sitter
    I cannot baby-sit tonight; I have too much homework to do
   I cannot baby-sit tonight; I have too much homework to do
   
2. Take watchful responsibility for  ( baby-sit , babysit )
   take watchful responsibility for
    I baby-sit the neighbor's plants when she is out of town
   I baby-sit the neighbor's plants when she is out of town