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to vacillate

to vacillate

1 8.4
To move slowly back and forth like a boat or kite
  • verb
  • /ˈvæsɪˌleɪt/
translation icon : ondular
  • As the waves hit the shore, the boat started to vacillate up and down, rocking back and forth on the water.

Examples

  • The flickering candlelight made the shadows vacillate on the walls, casting an enchanting pattern in the room.

  • In the final graph, the line does vacillate between ecstasy and misery, but not much beyond the baseline.

    Blog text (11)
  • Boycotts: how do you measure success where the stock market vacillates by 10, 20 points any day regardless of fundamentals?

    Blog text (4)
  • The Muslim authorities permitted Jews to erect a synagogue on the site, although the situation vacillated over the next few centuries.

    Academic text (2013)
  • His mountainous majesty casts a dozen vacillating shadows in the chiaroscuro of the corridor.

    Fiction book (1996)
  • The leaves on the tree began to vacillate in the gentle breeze, creating a mesmerizing dance above us.

Synonyms

to roll
vsto vacillate
1.0

To move across the sky or land with a smooth swaying motion

focuses on rising and falling waves rather than circular turning motion
to vibrate
vsto vacillate
91 2.8

To make very small, quick moves back and forth

is slower larger rising and falling motion rather than tiny rapid shaking
to sway
vsto vacillate
77 2.4

To move slowly from side to side in a gentle rhythm

leans toward rising and falling rather than only side to side motion
to wave
vsto vacillate
64 1.0

To move with a smooth up and down motion, like a flag or the sea

is similar but used more generally for any rising and falling movement
to fluctuate
vsto vacillate
52 6.3

Change often in level or amount, going up and down without a clear pattern

refers to physical rising and falling movement rather than abstract amount changes
to ripple
vsto vacillate
49 2.7

To move in small waves on water when wind blows

refers to larger or more general rising and falling motion
to wobble
vsto vacillate
40 3.8

To move or shake unsteadily from side to side

is regular rising and falling rather than irregular shaking and tilting
to flutter
vsto vacillate
35 3.5

To move quickly and lightly back and forth, like wings or leaves

is smoother and more wave shaped rather than quick light flapping
to wag
vsto vacillate
32 1.4

To move quickly from side to side or up and down again and again

is slower and shaped like a wave rather than quick repetitive motion
to heave
vsto vacillate
13 5.3

To rise and fall in a regular way like waves

describes gentler wavelike motion rather than powerful swelling rises
to pulsate
vsto vacillate
13 4.1

To beat or move in a steady rhythm

is about sideways or vertical rise and fall rather than beating expansion
to waver
vsto vacillate
12 4.8

To move or shake in a slight, unsteady way

is smoother and more regular rising and falling not trembling
to undulate
vsto vacillate
10 7.7

To move in smooth waves like tall grass in the wind

is the broader term for any rising and falling motion
to oscillate
vsto vacillate
8 6.5

Move back and forth in a steady rhythm like a fan

describes wavelike rising and falling rather than only back and forth
to waggle
vsto vacillate
7 4.5

To move something repeatedly from side to side or up and down

is about continuous larger rising and falling rather than small repeated gestures
to hunt
vsto vacillate
  • Specialized
2 8.8

To move back and forth instead of staying steady

is general physical rise and fall motion not a technical machine instability term
to bob around
vsto vacillate
  • US
1 3.9

Move up and down gently while floating in water or air

is more regular and wavelike rather than random gentle motion
to bobble
vsto vacillate
1 3.7

To move up and down quickly and lightly many times

is smoother and wave shaped rather than quick light bouncing
to librate
vsto vacillate
9.9

Move back and forth a little before stopping

is more continuous smooth rising and falling not brief stopping motions
to wamble
vsto vacillate
  • Archaic
9.9

To move unsteadily while rolling from side to side

describes smooth rising and falling rather than unsteady weaving or rolling
to wabble
vsto vacillate
8.9

To move unsteadily from side to side

is smoother and follows a gentle rise and fall pattern not random shaking

Antonyms

75 4.3

To become steady and stop changing

41 3.4

To make yourself or something stop moving

How Wavy

to undulate
10 7.7
to vacillate
1 8.4
to oscillate
8 6.5
to sway
77 2.4
to wobble
40 3.8
tremble
23 2.7

Surface Forms

vacillate infinitive
vacillated past
vacillated past participle
vacillating present participle
vacillates third person singular

Morphology

vacillate = vacill + ate

Although the sense 'move or sway' is etymologically related to the root, the combining form 'vacill-' is not a recognizable English base and the suffix '-ate' only signals verbhood, so the meaning is not recoverable by most learners from the parts.

Etymology

Vacillate comes from the Latin verb vacillare, which meant 'to sway' or 'to wobble'. That is why vacillate can also mean to move in a rising and falling or wavelike way, like a boat or a kite.