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impervious

impervious

28 7.5
Not letting water pass through and not changed by words
  • adjective
  • /ɪmˈpɜrviəs/
translation icon : impermeable
  • The waterproof jacket is impervious to rain and keeps you dry in all weather conditions.
  • impervious surfaces
  • impervious to water
  • impervious to change

He'd become impervious to that impulse.

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Examples

  • Egypt's regime remains highly centralized and impervious to serious challenge within the existing institutional system.

    Academic text (1999)
  • Furthermore, optical disks are extremely robust and relatively impervious to wear or to standard magnetic fields.

    Academic text (1996)
  • - This ship is impervious to weather.

  • And the island has one single tree growing on it, a Bay tree which is thought to be impervious to lightning.

  • Totally impervious to electromagnetic energy of any kind.

  • And that means that it's quite impervious to most chemical reactions.

  • A chip totally impervious to magnetic pulse damage.

  • The boundary is impervious to transfer of heat like a thermos.

  • They are impervious to heat and magnetism.

  • Yet while Washington's approach to drugs remains impervious to change, grassroots initiatives are threatening the status quo.

    Academic text (2012)

Synonyms

resistant
vsimpervious
49 3.9

Able to keep working when it meets heat, water, or chemicals

is about blocking passage physically rather than merely tolerating effects
waterproof
vsimpervious
35 1.6

Not letting water pass through

is broader, covering many substances and also not being affected or influenced
impenetrable
vsimpervious
19 7.3

Not possible to enter or go through

also means not being affected or influenced beyond physical barriers
watertight
vsimpervious
7 2.6

Completely closed so water cannot get in or out

is broader, blocking various substances and also meaning not being influenced
water-resistant
vsimpervious
5 3.4

Keeps some water out without being fully waterproof

is complete prevention of passage rather than only resisting it
impermeable
vsimpervious
4 6.6

Not allowing water or air to pass through

also covers being unaffected or uninfluenced beyond physical substance blocking
water-repellent
vsimpervious
1 3.6

Does not let water soak in easily

is full blockage of passage rather than mere shedding or resistance
nonporous
vsimpervious
1 6.5

A material that does not let water or air pass through

blocks passage more generally and can also mean not being influenced
repellent
vsimpervious
1 4.4

Not letting water or other liquids soak in

is broader, blocking passage of many substances rather than only absorption
windproof
vsimpervious
1 3.1

Made to stop wind from passing through clothing or tents

is about blocking more kinds of substances and also not being influenced
leakproof
vsimpervious
1 3.2

Not letting liquid or gas escape from a container

focuses on stopping all passage through a material rather than only openings
rainproof
vsimpervious
1 2.7

Keeping rain out so things stay dry

is broader, stopping many kinds of substances and not being influenced
waterproofed
vsimpervious
3.3

Treated so clothes or shoes do not let water in

describes the general quality of blocking many substances rather than a treatment
weathertight
vsimpervious
3.7

Not allowing water or wind to enter a building

is about stopping passage of substances generally and also not being influenced
nonabsorbent
vsimpervious
6.2

A material that does not soak up liquids

stops passage of substances through it rather than merely not soaking them
nonabsorptive
vsimpervious
8.8

Not able to take in liquids or other materials

is about blocking external passage rather than internal absorption
nonabsorbable
vsimpervious
  • Specialized
6.1

Not able to be taken in by the body or by materials

focuses on preventing passage of substances rather than inability to be absorbed
lightproof
vsimpervious
5.1

Not letting light pass through

is about blocking liquids, gases, and not being influenced rather than light

Antonyms

79 5.5

Easily affected or harmed by something

4 5.8

A material that lets water or air pass through it

1 7.8

To let water, light, or air pass through

How Impervious

impenetrable
19 7.3
impervious
28 7.5
resistant
8 3.7

Surface Forms

impervious positive
imperviouser comparative
imperviousest superlative

Morphology

impervious = pervious (transparent) = im + pervious

The prefix 'im-' clearly negates the meaning of 'pervious', making the meaning derivable.

Etymology

Impervious comes from the parts im- 'not' and via 'way', so it literally means 'no way through'. That's why something impervious does not let water or other things pass, and why a person impervious to criticism is not affected — nothing gets through.