periodic
periodical
alternate
beating
circling
cyclic
epochal
even
every other
fluctuant
fluctuating
fluctuational
harmonic
intermittent
isochronal
libratory
measured
metronomic
nutational
oscillating
pendular
pendulating
pendulous
pulsing
reciprocal
recurrent
recurring
resonant
rhythmic
rotary
seasonal
serial
shilly-shally
shilly-shallying
steady
swinging
undulant
undulatory
vacillating
vacillatory
vibratile
vibrating
vibratory
wavelike
wavering
wheeling
wobbly
PINS
aberrant
counter-espionage
datapath
electromechanical
evidence
legato
low-amplitude
magnetostatic
myeloproliferative
negative-feedback
non-contact
over-and-over
rotary-plow-for-honda-tractor.html
steerable
ten-cylinder
veridical
well-drilling