(of the way in which one speaks) ambiguously / (of the way in which one speaks) evasively / (of the way in which one speaks) vaguely / (of the way in which one speaks) noncommittally
ぬらりくらりする
nurarikurarisuru
ぬらりくらりする JVE
speak ambiguously / give an evasive [answer] / make a noncommittal [answer] / speak vaguely