Usually involves feeling of fear or insecurity. The loss of confidence in things that have always been stable or dependable in the past â this includes things such as a relationship, your personality structure, health, etc; so the breakdown of opinions, attitudes or relationships which seemed so dependable and you have taken for granted.
Crests and troughs. Waves have moving crests (or peaks) and troughs. A crest is the highest point the medium rises to and a trough is the lowest point the medium sinks to. Crests and troughs on a transverse wave are shown in Figure 1. A crest is a point on the wave where the displacement of the medium is at a maximum.
waver1. 1  to sway to and fro; flutter: Foliage wavers in the breeze. 2  to flicker or quiver, as light: A distant beam wavered and then disappeared. 3  become unsteady; begin to fail or give way: When she heard the news her courage wavered. 4  to shake or tremble, as the hands or voice: Her voice wavered.