Approach the batter's box, 6 letters
Come through in a big game, 6 letters
Increase by degrees, 6 letters
Increase in intensity, 6 letters
Increase, as production, 6 letters
Increase, as the pace, 6 letters
Take on a challenge, 6 letters
Increase domestic activity?, 17 letters
Rate increases, e.g., 7 letters
Accept, as a challenge, 8 letters