out front—
1. in the forefront; in the lead:
- The advertising campaign put them out front in sales.
2. (Theater) in front of the stage; among the spectators:
- There is no difference for Falstaff between those on stage and those out front.
up front—(of payments) made initially:
- “How much cash did you have in mind?” “Five thousand, up front.” “I beg your pardon?” “In advance.”