undulation
Rising and falling
Undulation is a smooth, wavelike motion or form.
Water undulates, as do flags in wind, fields of grain, and rolling hills.
The word applies to any rising-and-falling movement or shape: the undulation of a snake's body, gentle undulations in the landscape.
To undulate is to move in this flowing, wave-like manner.
Traveling energy disturbances
- ripplesSmall surface undulations
- swellsEnlarges or billows
- surfWaves near shore
- currentDirected flow of charge
tide · breakers · whitecaps · crest · trough · billow · wake · chop
Repeated back-and-forth movement
- swayRock back and forth
- bobbingRhythmic vertical movement
- wobbleUnsteady side-to-side motion
- heaveForceful lift or throw
roll · pitch · rocking · surge · flutter · quiver · lurch · swing
Curving in flowing turns
- serpentineCurving in repeated bends
- windingCurving repeatedly, sinuous
- meanderingFollowing a winding course
- curvyHaving smooth bends
twisting · coiling · wavelike · flowing · snaking · curvature · S-curve · bending
Low natural elevations
- valleysLow areas between hills
- contourBounding line of shape
- dunesWind-formed sand ridges
- ridgesNarrow elevated formations
slopes · rolling · landscape · topography · mounds · hillocks · swells · rises
Oscillating pitch effect
- tremoloRapid tonal wavering
- warbleSing with tremolo
- modulationVarying signals to transmit
- waverHesitate or fluctuate
quaver · pulsation · throbbing · drone · hum · fluctuation · oscillating · pitch
Involuntary digestive muscle waves
- contractionsShortened word forms
- writhingTwisting the body convulsively
- squirmingTwisting restlessly from discomfort
- ripplingFlowing in undulations
crawling · slithering · belly-dance · hips · torso · spine · wavelike · muscular
waves
Traveling energy disturbances
current · tide · breakers · whitecaps · crest · trough · billow · wake · chop · seiche
oscillation
Repeated back-and-forth movement
heave · roll · pitch · rocking · surge · flutter · quiver · lurch · swing · fluctuation
sinuous
Curving in flowing turns
- serpentineCurving in repeated bends
- windingCurving repeatedly, sinuous
- meanderingFollowing a winding course
curvy · twisting · coiling · wavelike · flowing · snaking · curvature · S-curve · bending · wavy
hills
Low natural elevations
ridges · slopes · rolling · landscape · topography · mounds · hillocks · swells · rises · folds
vibrato
Oscillating pitch effect
- tremoloRapid tonal wavering
- warbleSing with tremolo
- modulationVarying signals to transmit
waver · quaver · pulsation · throbbing · drone · hum · fluctuation · oscillating · pitch · tone
peristalsis
Involuntary digestive muscle waves
- contractionsShortened word forms
- writhingTwisting the body convulsively
- squirmingTwisting restlessly from discomfort
rippling · crawling · slithering · belly-dance · hips · torso · spine · wavelike · muscular · rhythmic
undulationflatness
Absence of slope
evenness · levelness · smoothness · uniformity · steadiness
undulationstillness
Complete lack of motion
motionlessness · rigidity · stasis · immobility · steadiness
- undulating membraneRippling locomotor organelle