Dindin Santiago and Myla Pablo provided the offensive firepower anew for the Lady Bulldogs, who remained just a game behind of fourth-place University of Santo Tomas (3-2).
NU breezed through the first two sets as FEU struggled on both ends.
Santiago and Pablo had their way as well as rookie Aiko Urdas, who added 11 points on a pair of blocks and aces.
The Lady Tams showed fight as the Lady Bulldogs starting slow in the third set with too many unforced errors.
FEU fell into sixth-place tie with University of the Philippines at 1-4 despite parading returning coach Kid Santos, who replaced Nes Pamilar at the sidelines.