A really fast thesaurus... with lots of synonyms.
Impermeable has 43 synonyms. The top synonyms for impermeable are firm, hard, close, dense, gluey, heavy, thick, closed and 35 more. Another word for impermeable is firm. Browse the full list below.
| Length
| Random | DefinitionA common synonym for impermeable is firm. Other synonyms include hard, close, dense, gluey.
Impermeable has 43 synonyms listed on Thesaurasize.
(adj): impossible to permeate; not allowing passage, especially of liquids; waterproof
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