impermeable

Apparently from im- +‎ permeable.^[1] Compare French imperméable, from Latin impermeābilis, from im- + permeābilis (“permeable”).

• IPA^(key): /ɪmˈpɜːɹmɪəbəl/

• Audio (Southern England):

  (file)

impermeable (comparative more impermeable, superlative most impermeable)

1. Impossible to permeate.
2. Not allowing passage, especially of liquids; waterproof.

• nonpermeable
• sealed

• permeable

• hermetically sealed
• impenetrable

Borrowed from Latin impermeābilis. By surface analysis, im- +‎ permeable.

• IPA^(key): (Central, Balearic) [im.pər.meˈab.blə]
• IPA^(key): (Valencia) [im.peɾ.meˈa.ble]

impermeable m or f (masculine and feminine plural impermeables)

1. impermeable

   Antonym: permeable

• impermeabilitzar

• impermeabilitat

impermeable m (plural impermeables)

1. raincoat

• “impermeable”, in Gran Diccionari de la Llengua Catalana, Grup Enciclopèdia Catalana, 2025.
• “impermeable”, in Diccionari de la llengua catalana [Dictionary of the Catalan Language] (in Catalan), second edition, Institute of Catalan Studies [Catalan: Institut d'Estudis Catalans], April 2007
• “impermeable”, in Gran Diccionari de la Llengua Catalana, Grup Enciclopèdia Catalana, 2025.
• “impermeable” in Diccionari normatiu valencià, Acadèmia Valenciana de la Llengua.
• “impermeable” in Diccionari català-valencià-balear, Antoni Maria Alcover and Francesc de Borja Moll, 1962.

• impermeábel

From Latin impermeābilis, equivalent to im- +‎ permeable.

• IPA^(key): /ĩmpeɾˈmeaβle/

impermeable m or f (plural impermeables)

1. impermeable, waterproof

   Antonym: permeable

impermeable m (plural impermeables)

1. raincoat

• impermeabilidade
• impermeabilizar

• “impermeable”, in Dicionario da Real Academia Galega (in Galician), A Coruña: Royal Galician Academy, 2012–2025

From Latin impermeābilis, equivalent to im- +‎ permeable.

• IPA^(key): /impeɾmeˈable/ [ĩm.peɾ.meˈa.β̞le]
• Rhymes: -able
• Syllabification: im‧per‧me‧a‧ble

impermeable m or f (masculine and feminine plural impermeables)

1. impermeable, waterproof

   Antonym: permeable

impermeable m (plural impermeables)

1. raincoat

   Synonym: chubasquero

• “impermeable”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8, Royal Spanish Academy [Spanish: Real Academia Española], 10 December 2024