Thesaurus
impenetrable
Synonyms and Antonyms of impenetrable
- The ancient temple was surrounded by vast stretches of impenetrable jungle.
impassable (also impassible), impermeable, impervious, impregnable
- an impenetrable secret code
arcane, cryptic, deep, enigmatic (also enigmatical), inscrutable, mysterious, mystic, occult, uncanny
dark, darkling, fuzzy, murky, obscure, shadowy, vague
imponderable, incomprehensible, unfathomable, unintelligible, unsearchable
inexplicable, unaccountable, unexplainable
metaphysical, mystical, numinous, supernatural
baffling, befuddling, bewildering, confounding, confusing, mystifying, perplexing, puzzling
- The textbook's language is completely impenetrable, at least to me.
- The container of toxic waste has an impenetrable seal to prevent leaks.
close, compact, dense, snug, thick
airtight, hermetic (also hermetical), leakproof, watertight
Learn More about impenetrable
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Dictionary: Definition of impenetrable Spanish Central: Translation of impenetrable Nglish: Translation of impenetrable for Spanish speakers Britannica English: Translation of impenetrable for Arabic speakers
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