Mark McAdnrew scored career-high 33 points in the Bears' failed attempt to extend a three-game winning streak.
Cornell improved to 8-4 in league play and 15-11 overall. Brown dropped to 5-7 (10-17) with the defeat.
The Bears trailed from the outset, falling behind by as many as ten points midway through the opening half. The Big Red answered a late Brown surge by closing out the first half with a 7-0 run in the final minute of play.
Wittman had four three-point field goals and seven rebounds while Dale connected on 5 of 9 three-point attempts for the Big Red, who finished with 10 of 13 from beyond the arc in the second half.