teetering

synonyms

Lissajous figure

alternation

back-and-forth

coming and going

dilapidated

doddering

ebb and flow

fluctuation

flux and reflux

groggy

oscillation

pendulation

ramshackle

reciprocation

rhythmic play

ricketish

rickety

rocky

seesaw

seesawing

shaky

shifting

shuffling

sine wave

spidery

spindly

teeter

teeter-totter

teeter-tottering

teetery

to-and-fro

tottering

tottery

tumbledown

unsteady

ups and downs

vacillation

variation

vicissitude

wavering

wigwag

wobbly

rhymes

metering

petering