2022-03-28
ศัพท์ น่าสับสน - Set – F - fluctuate & vacillate
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Dictionary.com:
ออกเสียง fluctuate = “FLUHK-choo-yet”
ออกเสียง vacillate = “VAS-uh-leyt”
Dictionary of Problem Words and Expressions:
fluctuate & vacillate
Each of these words means
“to move back and forth,”
“to change continually,”
“to vary.”
What little distinction in meaning there is between them
is that fluctuate can apply to both persons and actions,
whereas vacillate is usually applied only to persons:
“The stock market will undoubtedly fluctuate during the coming year.”
“She vacillated between washing her hair and going to the movies.”
Dictionary.com:
MORE ABOUT FLUCTUATE
What does fluctuate mean?
Fluctuate means to continually change or shift back and forth.
The verb is most commonly used in the context of abstract
or intangible things that frequently change,
such as temperature, the stock market, or someone’s mood.
This kind of continual change is called fluctuation.
Example:
The volume on my TV keeps fluctuating
—it gets louder during commercials and then
it gets quiet again when the show comes back on.
Where does fluctuate come from?
The first records of the word fluctuate come from the 1600s.
It comes from the Latin verb fluctuāre, meaning “to flow,”
from fluctus, “a wave.”
Waves in the ocean are always in motion, rising, falling,
going back and forth—they’re always fluctuating.
Still, fluctuate is most commonly applied to nonphysical things.
The amount of money in your bank account will fluctuate as you make
deposits and withdrawals.
Fluctuation may be predictable or unpredictable.
The temperature in deserts often regularly fluctuates
between the day, when it’s very hot, and
the night, when it can get very cold.
But a person’s mood might fluctuate
—between happy and grumpy, for example—much more unpredictably.
Things that fluctuate can besaid to bein a state of flux
—continuous change.
(The word flux comes from the same root as fluctuate).
Merriam-Webster Dictionary:
Choose the Right Synonym for fluctuate
Swing, Sway, Oscillate, Vibrate, Fluctuate, Waver, Undulate
mean to move from one direction to its opposite.
Swing implies a movement of something attached at one end
or one side.
the door suddenly swung open
Sway implies a slow swinging or teetering movement.
trees swaying in the breeze
Oscillate stresses a usually regular alternation of direction.
an oscillating fan
Vibrate suggests the rapid oscillation of an elastic body
under stress or impact.
the vibrating strings of a piano
Fluctuate suggests constant irregular changes of level, intensity,
or value.
fluctuating interest rates
Waver stresses irregular motion suggestive of reeling or tottering.
the exhausted runner wavered before collapsing
Undulate suggests a gentle wavelike motion.
an undulating sea of grass
Merriam-Webster Dictionary:
Choose the Right Synonym for vacillate
Hesitate, Waver, Vacillate, Falter
mean to show irresolution or uncertainty.
Hesitate implies a pause before deciding or acting or choosing.
hesitated before answering the question
Waver implies hesitation after seeming to decide and
so connotes weakness or a retreat.
wavered in his support of the rebels
Vacillate implies prolonged hesitation from inability
to reach a firm decision.
vacillated until events were out of control
Falter implies a wavering or stumbling and often connotes nervousness,
lack of courage, or outright fear.
never once faltered during her testimony
