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- pronunciation:
- ihm
puhr
mi
bl
- features:
- Word Parts
| part of speech: |
adjective |
| definition: |
not permitting passage or penetration.
An umbrella must be made of fabric impermeable by water.- antonyms:
- permeable, porous
- similar words:
- impenetrable, proof, repellent
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| related words: |
dense, solid, staunch, tight |
| derivations: |
impermeably (adv.), impermeability (n.), impermeableness (n.) |
The word impermeable
contains the following parts:
im-2
Latin
prefix
that means not, without
  More about this word part:
The prefix im-2 occurs in Latin loanwords. It is an assimilated form of in-2 used before roots beginning with the letter "m," "p," and "b." See in-2.
Example words:
immaculate, immature, immediate, immortal, immune, impartial, impatient, imperfect, impersonal, impolite, impossible, improper, improvise, impudent, impure
per-
Latin
prefix
that means through, throughout; very
Example words:
perceive, perception, perennial, perfect, perforate, perform, perjury, permanent, permission, permit, perpetual, persecute, persist, persistent, perspective, perspire, persuade, persuasion
-able, -ible, -ble
Latin
adjective-forming suffix
that means capable of being, doing, or undergoing
More about this word part:
The suffix -able
, and its variants, is attached to Latin verb roots or English transitive verbs to form adjectives. (In a small set of cases, -able
is attached to a noun, e.g. knowledgeable and marriageable.) For spelling purposes, it is useful to know that -able
is more likely to be added to a whole English word (comparable, adorable
), while -ible
is more likely to follow a bound root (visible
, legible
). However,there are still many words which combine a root with -able
(capable
, inevitable
). The suffix -ity can be added to any adjective ending in -able
, -ible
, -ble
to produce a corresponding noun ending in -ability, -ibility, -bility (possible
+ -ity > possibility; irrevocable + -ity > irrevocability.)
Example words:
acceptable, accessible, adorable, amiable, audible, biodegradable, capable, convertible, dependable, disagreeable, disposable, divisible, eligible, flammable, flexible, illegible, impossible, inaudible, incapable, incomprehensible, inconceivable, incredible, incurable, indivisible, inevitable, invaluable, invincible, invisible, irreversible, legible, likable, lovable, movable, notable, perishable, portable, possible, sensible, usable, visible, washable, affordable, reliable, remarkable, approachable, durable, renewable, sustainable
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