impermeable

Từ điển WordNet v3.1 - WordNet Dictionary

adjective

preventing especially liquids to pass or diffuse through
- impermeable stone
- an impermeable layer of scum
- a coat impermeable to rain
• Ant:
permeable
• Similar to:
retentive, water-repellent, water-resistant
• See Also:
impervious, imperviable, tight
• Derivationally related forms:
impermeableness, impermeability