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Common words appear frequently in written and spoken language across many genres from radio to academic journals.
Informal words should be reserved for casual, colloquial communication.
adj
impenetrable
Synonyms for more leak-proof
adj
impenetrable
More words related to more leak-proof
adj. impenetrable
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.
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