seesaw

A structure composed of a plank, balanced in the middle, used as a game in which one person goes up as the other goes down.

A series of up-and-down movements.

A series of alternating movements or feelings.

He has been arguing in a circle; there is thus a see-saw between the hypothesis and the fact.

Manchester Citykept up their unbeaten start to the Premier League season with victory over QPR in an entertaining see-saw encounter at Loftus Road.

An abnormal breathing pattern caused by airway obstruction, characterized by paradoxical chest and abdominal movement.

A tactic in which a piece repeatedly gains material, while simultaneously creating an inescapable series of alternating direct and discovered checks.

To use a seesaw.

To fluctuate.

When I think of your kisses / My mind see-saws

To cause to move backward and forward in seesaw fashion.

He see-saws himself to and fro.

fluctuating.