גָּלַל
From LSJ
Ἓν οἶδα, ὅτι οὐδὲν οἶδα → I know only one thing, that I know nothing | all I know is that I know nothing.
English (Strong)
a primitive root; to roll (literally or figuratively): commit, remove, roll (away, down, together), run down, seek occasion, trust, wallow.