Synonyms of impervious
1 unaffectedDictionary • They are impervious to all suggestion of change.
unaffected • She seemed totally unaffected by what she'd drunk.
unmoved • She carried on criticizing me in this vein, but I was unmoved.
untouched • He was completely untouched by her tears.
proof • The fortress was proof against attack.
2 resistantDictionary • The floorcovering will need to be impervious to water.
resistant • The body may be less resistant if it is cold.
impenetrable • The range forms an impenetrable barrier between Europe and Asia.
invulnerable • She assumed that her mother was invulnerable and all-powerful.
impassable • Many minor roads in the south remained impassable today.
hermetic • breaking the hermetic seal of the jar
impermeable • The canoe is made from an impermeable wood.
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hermeticIf a container has a hermetic seal, the seal is very tight so that no air can get in or out.
• breaking the hermetic seal of the jar
impassableIf a road, path, or route is impassable, it is impossible to travel over because it is blocked or in bad condition.
• Many minor roads in the south remained impassable today.
impenetrableIf you describe something such as a barrier or a forest as impenetrable, you mean that it is impossible or very difficult to get through.
• The range forms an impenetrable barrier between Europe and Asia.
Thesaurus for impervious from the Collins English Thesaurus
not able to be penetrated, as by water, light, etc; impermeable