ebb and flow (?.)

• Lissajous figure
• alternate
• alternation
• back and fill
• back-and-forth
• battledore and shuttlecock
• be poised
• billow
• break
• comb
• come and go
• coming and going
• crash
• dash
• direct tide
• ebb
• ebb tide
• flood
• flood tide
• flounder
• flow
• fluctuate
• flux
• flux and reflux
• full tide
• go through phases
• heave
• high tide
• high water
• hitch and hike
• lift
• low tide
• low water
• lunar tide
• neap
• neap tide
• opposite tide
• oscillate
• pass and repass
• peak
• pendulate
• popple
• reciprocate
• reciprocation
• refluence
• reflux
• rhythmic play
• ride and tie
• ring the changes
• rip
• riptide
• rise
• rise and fall
• roll
• scend
• seesaw
• seesawing
• send
• shift
• shuffle
• shuttle
• shuttlecock
• sine wave
• smash
• solar tide
• spring tide
• stagger
• surge
• sway
• swell
• swing
• teeter
• teeter-totter
• teeter-tottering
• teetering
• thalassometer
• tidal amplitude
• tidal current
• tidal current chart
• tidal flow
• tidal range
• tide
• tide chart
• tide gate
• tide gauge
• tide race
• tide rip
• tidewater
• tideway
• to-and-fro
• toss
• totter
• tottering
• turn
• undulate
• ups and downs
• vacillate
• vary
• wave
• waver
• wax and wane
• wibble-wabble
• wigwag
• wobble
• zigzag