sway to and fro

sway to and fro

1. Literally, to continue moving, swinging, bending, tilting, etc., slowly in one direction and then back in the opposite direction. The structure swayed to and fro, threatening to topple at any given minute. Everyone in the crowd was swaying to and fro in time with the song.
2. By extension, to oscillate between two opposing positions, decisions, inclinations, points of view, etc. Public opinion has swayed to and fro on this issue for decades. You can't keep swaying to and fro over this—you need to make a decision and commit to it!
See also: and, fro, sway
References in classic literature ?
From time to time, an elephant made the tall tops of the undergrowth sway to and fro, and you could hear the crackling of huge branches as his ponderous ivory tusks broke them in his way.
The other semi between Thornhill and Pontprennau Pumas saw fortunes sway to and fro.
Unlike Nannon, who looks fatter without her clothes - Mari has seen her, walking back to her bedroom with her dressing gown not done up, gaping to reveal an expanse of stomach and breasts that sway to and fro - Elsa looks even thinner.
Around your shores wild flowers grow And in the breeze sway to and fro: Such magic all around you lies, I dream of you and my heart sighs.