Note to King Lear, 1.1.154

King Lear,
Act 1, Scene 1, line 154
Reverbs no hollowness: does not echo hollowness. —I think this a direct reference to the previous speeches of King Lear's other two daughters, in which Goneril made a hollowly extravagant declaration of her love for her father, and was then echoed by Regan.