In advance; before: Pay ahead, and you'll receive a discount.
In or into the future; for the future: planned ahead.
In an advanced position or a configuration registering the future: Set the clock ahead.
At or to a different time; earlier or later: moved the appointment ahead, from Tuesday to Monday.
In a forward direction; onward: The train moved ahead slowly.
In the prescribed direction or sequence for normal use: You won't hear anything unless you roll the tape ahead.
In or into a more advantageous position: wanted to get ahead in life.
be ahead To be winning or in a superior position: The home team was ahead in the second period. Your company is ahead in developing the new technology.