Fleswian

According to the Old English Dictionary:

fleswian

p. ede; pp. ed To mutter, whisper; susurrāre :-- Mid ðý he ðá geswippre múþe líccetende ǽrend rehte [MS. wrehte] and leáse fleswede when he then told a feigned message with his crafty mouth, and falsely whispered; cum sĭmŭlātam lēgātiōnem ōre astūto volvĕret, Bd. 2, 9; S. 511, 20. fleswian