Synonyms
Antonyms
Etymology

1. perpetual

adjective. ['pɝˈpɛtʃuːəl'] continuing forever or indefinitely.

Synonyms

  • unceasing
  • unending
  • ageless
  • lasting
  • everlasting
  • eonian
  • eternal
  • permanent

Antonyms

  • short
  • caducous
  • mitigated
  • reversible

Etymology

  • perpetualis (Latin)

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Words that Rhyme with Perpetual Motion Machine

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2. machine

noun. ['məˈʃiːn'] any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks.

Synonyms

  • textile machine
  • stapler
  • coin machine
  • shovel
  • staplegun
  • power shovel
  • comber
  • cotton gin
  • hop-picker
  • stapling machine
  • information processing system
  • automatic teller
  • time machine
  • trimmer
  • decoder
  • printer
  • phonograph
  • feeder
  • automatic teller machine
  • calculator
  • ATM
  • machine tool
  • paviour
  • pestle
  • machinery
  • pavior
  • computing machine
  • electronic computer
  • riveting machine
  • milking machine
  • snow blower
  • corker
  • data processor
  • assembly
  • sorter
  • franking machine
  • device
  • computer
  • record player
  • slot machine
  • gin
  • tacker
  • printing machine
  • digger
  • cash dispenser
  • printing press
  • paving machine
  • calculating machine
  • self-feeder
  • calender
  • automated teller machine
  • stamp
  • Zamboni
  • perpetual motion machine
  • hopper
  • pile driver
  • cash machine
  • automated teller
  • excavator
  • cement mixer
  • press
  • motor
  • slicer
  • power tool
  • mechanical press
  • computing device
  • rivetter
  • workhorse
  • bagger
  • concrete mixer
  • farm machine
  • staple gun
  • simulator
  • riveter

Antonyms

  • elated
  • estimable
  • proud
  • sufficient

Etymology

  • machine (Middle French (ca. 1400-1600))
  • machina (Latin)

3. machine

noun. ['məˈʃiːn'] an intricate organization that accomplishes its goals efficiently.

Synonyms

  • organisation

Antonyms

  • nondriver
  • distributed

Etymology

  • machine (Middle French (ca. 1400-1600))
  • machina (Latin)

4. machine

noun. ['məˈʃiːn'] an efficient person.

Synonyms

  • mortal
  • someone
  • soul
  • individual
  • person
  • bionic woman
  • cyborg
  • somebody

Antonyms

  • decompress
  • disarrange
  • prolix
  • unexciting

Etymology

  • machine (Middle French (ca. 1400-1600))
  • machina (Latin)

5. motion

noun. ['ˈmoʊʃən'] the use of movements (especially of the hands) to communicate familiar or prearranged signals.

Synonyms

  • facial gesture
  • wafture
  • sign
  • bowing
  • high-five
  • shrug
  • wave
  • beck
  • waving
  • flourish
  • gesture
  • curtsy
  • obeisance
  • sign of the cross
  • visual communication
  • nod
  • facial expression
  • previous question
  • V sign
  • bow
  • gesticulation

Antonyms

  • dishonor
  • obscurity
  • prominence
  • running

Etymology

  • motion (Anglo-Norman)

6. motion

noun. ['ˈmoʊʃən'] a natural event that involves a change in the position or location of something.

Synonyms

  • recoil
  • occurrence
  • repercussion
  • tectonic movement
  • wave
  • pedesis
  • throw
  • approaching
  • turning
  • whirl
  • movement
  • squeeze
  • stroke
  • seek
  • jitter
  • commotion
  • periodic motion
  • Brownian movement
  • occurrent
  • rebound
  • bend
  • bending
  • crustal movement
  • deflection
  • Brownian motion
  • natural event
  • passage
  • backlash
  • deflexion
  • heave
  • happening
  • kick
  • twist
  • passing
  • cam stroke
  • wrench
  • moving ridge
  • change of location
  • wring
  • wobble
  • turn
  • travel
  • undulation
  • periodic movement

Antonyms

  • immotility
  • let go of
  • straight line
  • fall

Etymology

  • motion (Anglo-Norman)

7. motion

noun. ['ˈmoʊʃən'] a change of position that does not entail a change of location.

Synonyms

  • adduction
  • headshaking
  • sweep
  • eurythmics
  • retroflection
  • fetal movement
  • standing
  • motility
  • wave
  • jerking
  • eversion
  • saccade
  • gesture
  • reciprocation
  • prostration
  • inclining
  • everting
  • shutting
  • circumduction
  • quiver
  • movement
  • squatting
  • toss
  • wiggle
  • kneel
  • stroke
  • wriggle
  • squirm
  • change
  • lurch
  • eurhythmics
  • retraction
  • move
  • pitch
  • straddle
  • squat
  • upending
  • reclining
  • jolt
  • kneeling
  • kicking
  • body English
  • inversion
  • inclination
  • jerk
  • closing
  • waver
  • sitting
  • flutter
  • foetal movement
  • pitching
  • disturbance
  • opening
  • retroflexion
  • rotation
  • rotary motion
  • quivering
  • reach
  • headshake
  • flicker
  • dart
  • eurythmy
  • kick
  • abduction
  • stretch
  • span
  • vibration
  • eye movement
  • flit
  • eurhythmy
  • posing
  • reaching
  • agitation

Antonyms

  • opening
  • dirty
  • lose
  • normality

Etymology

  • motion (Anglo-Norman)

8. motion

noun. ['ˈmoʊʃən'] a state of change.

Synonyms

  • state
  • quiver
  • nonmoving
  • unmoving
  • trembling
  • stream
  • vibration
  • shakiness
  • flow
  • moving
  • palpitation
  • precession
  • shaking
  • quivering

Antonyms

  • motionlessness
  • nonmoving
  • destabilize
  • enable

Etymology

  • motion (Anglo-Norman)

9. motion

noun. ['ˈmoʊʃən'] the act of changing location from one place to another.

Synonyms

  • approach
  • advancement
  • locomotion
  • forward motion
  • onward motion
  • descent
  • displacement
  • maneuver
  • lunge
  • ascension
  • procession
  • hurry
  • migration
  • speed
  • slippage
  • approaching
  • movement
  • change
  • lurch
  • return
  • ascent
  • slide
  • move
  • vacillation
  • traveling
  • following
  • crawl
  • progression
  • swing
  • progress
  • swinging
  • shift
  • rush
  • play
  • ascending
  • coming
  • coast
  • pursuit
  • stream
  • manoeuvre
  • translation
  • shifting
  • flow
  • haste
  • rushing
  • pursual
  • speeding
  • rise
  • hurrying
  • travel
  • travelling
  • chase
  • advance

Antonyms

  • inelasticity
  • stand still
  • open
  • defeat

Etymology

  • motion (Anglo-Norman)

10. motion

verb. ['ˈmoʊʃən'] show, express or direct through movement.

Synonyms

  • sign
  • shrug
  • communicate
  • wave
  • hold out
  • stretch forth
  • gesture
  • exsert
  • gesticulate
  • applaud
  • acclaim
  • put out
  • wink
  • extend
  • shake
  • beckon
  • nod
  • clap
  • intercommunicate
  • bless
  • cross oneself
  • spat
  • bow
  • stretch out

Antonyms

  • loosen
  • depersonalize
  • dissimilate
  • increase

Etymology

  • motion (Anglo-Norman)

Example sentences of the word perpetual-motion-machine


1. Noun Phrase
A "perpetual motion machine" (e.g., a pendulum that swings with the same timing and sweep without ever slowing down) on Earth is impossible because of air resistance and associated energy losses.

2. Noun Phrase
The perpetual pump is one of many perpetual motion machines that have been designed over the years, with the aim of producing continuous motion, and often, as a result, free energy.

3. Noun Phrase
The laws of thermodynamics and the law of the conservation of energy explain why perpetual motion machines are not possible.

4. Noun Phrase
They thought if the motor and generator were matched exactly, they could build a magnetic power source that would run forever as a perpetual motion machine.

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