Meanings
adjectiveimpermeable (comparative more impermeable, superlative most impermeable)
comparative more impermeable · superlative most impermeable
- Impossible to permeate.
- Not allowing passage, especially of liquids; waterproof.
Synonyms & antonyms
Similar
Opposite
adjectivepreventing especially liquids to pass or diffuse through
Opposite
Synonym sets from Open English WordNet, CC BY 4.0.
Origin
Apparently from im- + permeable. Compare French imperméable, from Latin impermeābilis, from im- + permeābilis (“permeable”).
Full word history & related roots →Translations
Bulgarian непроницаем, херметичен
- непроницаем (nepronicaem)impossible to permeate
- херметичен (hermetičen)impossible to permeate
- непромокаем (nepromokaem)not allowing passage of liquids
Catalan impermeable, impermeable
- impermeableimpossible to permeate
- impermeablenot allowing passage of liquids
Finnish läpäisemätön, läpipääsemätön
- läpäisemätönimpossible to permeate
- läpipääsemätönimpossible to permeate
- tiivisimpossible to permeate
- läpäisemätönnot allowing passage of liquids
French imperméable, imperméable
- imperméableimpossible to permeate
- imperméablenot allowing passage of liquids
German dicht, dicht
- dichtimpossible to permeate
- dichtnot allowing passage of liquids
Greek αδιαπέραστος, αδιάβροχος
- αδιαπέραστος (adiapérastos)impossible to permeate
- αδιάβροχος (adiávrochos)not allowing passage of liquids
Indonesian kedap
- kedapimpossible to permeate
Irish neamh-thréscaoilteach, neamhscagach
- neamh-thréscaoilteachimpossible to permeate
- neamhscagachimpossible to permeate
- neamh-thréscaoilteachnot allowing passage of liquids
Latin impermeābilis
- impermeābilisimpossible to permeate
Malay tak telap
- tak telapimpossible to permeate
Māori tukukore
- tukukoreimpossible to permeate
Portuguese impermeável, impermeável
- impermeávelimpossible to permeate
- impermeávelnot allowing passage of liquids
Russian непроницаемый, непромока́емый
- непроницаемый (nepronicajemyj)impossible to permeate
- непромока́емый (nepromokájemyj)not allowing passage of liquids
Spanish impermeable, impermeable
- impermeableimpossible to permeate
- impermeablenot allowing passage of liquids
Swedish ogenomtränglig, tät
- ogenomträngligimpossible to permeate
- tätimpossible to permeate
- ogenomtränglignot allowing passage of liquids
- tätnot allowing passage of liquids
- vattentätnot allowing passage of liquids
Tagalog dimatulot, dimatulot
- dimatulotimpossible to permeate
- dimatulotnot allowing passage of liquids
Welsh anathraidd
- anathraiddimpossible to permeate
Cite this entry
APA
impermeable. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/impermeable
MLA
“impermeable.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/impermeable. Accessed November 2, 2026.
Chicago
WatkinsX Dictionary, s.v. “impermeable,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/impermeable.
Source: impermeable on Wiktionary, CC BY-SA 4.0.